US2004082647A1PendingUtilityA1

Method for the preparation of tetrahydrobenzothiepines

Assignee: SEARLE LLCPriority: Mar 10, 2000Filed: Apr 21, 2003Published: Apr 29, 2004
Est. expiryMar 10, 2020(expired)· nominal 20-yr term from priority
C07D 409/12A61K 31/235A61K 31/495A61P 3/06C07D 487/08A61P 43/00C07D 337/08A61K 31/38
49
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Claims

Abstract

Among its several embodiments, the present invention provides an improved process for the preparation of tetrahydrobenzothiepine-1,1-dioxide compounds; the provision of a process for preparing a diastereomeric mixture of tetrahydrobenzothiepine-1,1-dioxide compounds from a single diastereomer of such compounds; the provision of a process for the preparation of 3-bromo-2-substituted propionaldehyde compounds; and the provision of a process for the preparation of 3-thio-2-substituted propionaldehyde compounds.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A method for the preparation of a benzylammonium compound having the structure of Formula 60 
       
         
           
           
               
               
           
         
       
       wherein the method comprises treating a benzyl alcohol ether compound having the structure of Formula (61)  
       
         
           
           
               
               
           
         
       
       under derivatization conditions to form a derivatized benzyl ether compound having the structure of Formula (62)  
       
         
           
           
               
               
           
         
       
       and contacting the derivatized benzyl ether compound with an amine having the structure of Formula (2)  
       
         
           
           
               
               
           
         
       
       under amination conditions thereby producing the benzylammonium compound or a derivative thereof, wherein: 
 R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl;  
 R 3 , R 4 , and R 5  independently are selected from the group consisting of H and C 1  to about C 20  hydrocarbyl, wherein optionally one or more carbon atom of the hydrocarbyl is replaced by O, N, or S, and wherein optionally two or more of R 3 , R 4 , and R 5  taken together with the atom to which they are attached form a cyclic structure;  
 R 9  is selected from the group consisting of H, hydrocarbyl, hydroxyalkyl, alkoxyalkyl, aminoalkyl, alkylaminoalkyl, ammoniumalkyl, polyalkoxyalkyl, heterocyclyl, heteroaryl, quaternary heterocycle, quaternary heteroaryl, OR 3 , NR 3 R 4 , N + R 3 R 4 R 5 A − , SR 3 , S(O)R 3 , SO 2 R 3 , SO 3 R 3 , oxo, CO 2 R 3 , CN, halogen, NCO, CON 3 R 4 , SO 2 OM, SO 2 NR 3 R 4 , PO(OR 23 )OR 24 , P + R 3 R 4 R 5 A − , S + R 3 R 4 A − , and C(O)OM;  
 R 23  and R 24  are independently selected from the substituents constituting R 3  and M;  
 n is a number from 0 to 4;  
 A −  is a pharmaceutically acceptable anion and M is a pharmaceutically acceptable cation; and  
 X is a nucleophilic substitution leaving group.  
 
     
     
         2 . A method for the preparation of a benzylammonium compound having the structure of Formula (1)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises treating a benzyl alcohol ether compound having the structure of Formula (6)  
       
         
           
           
               
               
           
         
       
       under derivatization conditions to form a derivatized benzyl ether compound having the structure of Formula (2)  
       
         
           
           
               
               
           
         
       
       and contacting the derivatized benzyl ether compound with an amine having the structure of Formula (42):  
       
         
           
           
               
               
           
         
       
       under amination conditions thereby producing the benzylammonium compound or a derivative thereof, wherein: 
 R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl;  
 R 3 , R 4 , and R 5  independently are selected from the group consisting of H and C 1  to about C 20  hydrocarbyl, wherein optionally one or more carbon atom of the hydrocarbyl is replaced by O, N, or S, and wherein optionally two or more of R 3 , R 4 , and R 5  taken together with the atom to which they are attached form a cyclic structure; and  
 X is a nucleophilic substitution leaving group.  
 
     
     
         3 . The method of  claim 2  wherein R 3 , R 4 , and R 5  independently are selected from the group consisting of H and C 1  to about C 20  hydrocarbyl.  
     
     
         4 . The method of  claim 3  wherein R 3 , R 4 , and R 5  independently are selected from the group consisting of H and C 1  to about C 10 hydrocarbyl.  
     
     
         5 . The method of  claim 4  wherein R 3 , R 4 , and R 5  independently are C 1  to about C 10  hydrocarbyl.  
     
     
         6 . The method of  claim 5  wherein R 3 , R 4 , and R 5  independently are C 1  to about C 5  hydrocarbyl.  
     
     
         7 . The method of  claim 6  wherein R 3 , R 4 , and R 5  independently are selected from the group consisting of methyl, ethyl, and propyl.  
     
     
         8 . The method of  claim 7  wherein R 3 , R 4 , and R 5  each are methyl.  
     
     
         9 . The method of  claim 2  wherein the amine comprises a heterocycle.  
     
     
         10 . The method of  claim 9  wherein the amine comprises a bicyclic heterocycle.  
     
     
         11 . The method of  claim 10  wherein the amine is 1,4-diazabicyclo[2.2.2]octane and the benzylammonium compound has the structure of Formula (3)  
       
         
           
           
               
               
           
         
       
     
     
         12 . The method of  claim 2  wherein R 1  and R 2  independently are C 1  to about C 10  hydrocarbyl.  
     
     
         13 . The method of  claim 2  wherein R 1  and R 2  independently are C 1  to about C 5  hydrocarbyl.  
     
     
         14 . The method of  claim 13  wherein R 1  and R 2  are both butyl.  
     
     
         15 . The method of  claim 14  wherein the benzylammonium compound is an essentially racemic mixture of enantiomers.  
     
     
         16 . The method of  claim 14  wherein the benzylammonium compound produced by the method comprises a (4R,5R) enantiomer that preponderates over a (4S,5S) enantiomer.  
     
     
         17 . The method of  claim 9  wherein one of R 1  and R 2  is ethyl and the other of R 1  and R 2  is butyl.  
     
     
         18 . The method of  claim 17  wherein the benzylammonium compound produced comprises a (3R) enantiomer that preponderates over a (3S) enantiomer.  
     
     
         19 . The method of  claim 17  wherein the benzylammonium compound produced comprises a (3S) enantiomer that preponderates over a (3R) enantiomer.  
     
     
         20 . The method of  claim 9  wherein the amination conditions comprise a solvent.  
     
     
         21 . The method of  claim 20  wherein the solvent comprises a hydrophilic solvent.  
     
     
         22 . The method of  claim 21  wherein the hydrophilic solvent comprises a compound selected from the group consisting of water, a nitrile, an ether, an alcohol, a ketone, and an ester.  
     
     
         23 . The method of  claim 22  wherein the hydrophilic solvent comprises a ketone.  
     
     
         24 . The method of  claim 23  wherein the hydrophilic solvent comprises a compound selected from the group consisting of acetone and methyl ethyl ketone.  
     
     
         25 . The method of  claim 24  wherein the hydrophilic solvent comprises methyl ethyl ketone.  
     
     
         26 . The method of  claim 22  wherein the hydrophilic solvent comprises methyl ethyl ketone and water.  
     
     
         27 . The method of  claim 21  wherein the solvent further comprises a hydrophobic solvent.  
     
     
         28 . The method of  claim 27  wherein the hydrophobic solvent is selected from the group consisting of an aliphatic hydrocarbon, an aromatic solvent, and a chlorinated solvent.  
     
     
         29 . The method of  claim 27  wherein the hydrophobic solvent comprises an aromatic solvent.  
     
     
         30 . The method of  claim 29  wherein the hydrophobic solvent is selected from the group consisting of benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, mesitylene, and naphthalene.  
     
     
         31 . The method of  claim 30  wherein the hydrophobic solvent is toluene.  
     
     
         32 . The method of  claim 27  wherein the solvent comprises methyl ethyl ketone, toluene, and water.  
     
     
         33 . The method of  claim 20  wherein the solvent comprises a hydrophobic solvent.  
     
     
         34 . The method of  claim 9  wherein the amination conditions comprise performing the amination at a temperature in the range of about 0° C. to about 100° C.  
     
     
         35 . The method of  claim 34  wherein the amination conditions comprise performing the amination at a temperature in the range of about 15° C. to about 75° C.  
     
     
         36 . The method of  claim 35  wherein the amination conditions comprise performing the anination at a temperature in the range of about 20° C. to about 65° C.  
     
     
         37 . The method of  claim 2  further comprising an enantiomeric enrichment step.  
     
     
         38 . The method of  claim 37  wherein the enantiomeric enrichment step comprises chiral chromatography.  
     
     
         39 . The method of  claim 37  wherein the enantiomeric enrichment step comprises an asymmetric synthesis step.  
     
     
         40 . The method of  claim 37  wherein the enantiomeric enrichment step comprises crystallization of a diastereomeric salt.  
     
     
         41 . The method of  claim 2  wherein X is selected from the group consisting of chloro, bromo, iodo, methanesulfonato, toluenesulfonato, benzenesulfonato, and trifluoromethanesulfonato.  
     
     
         42 . The method of  claim 41  wherein X is selected from the group consisting of chloro, bromo, and iodo.  
     
     
         43 . The method of  claim 42  wherein X is chloro.  
     
     
         44 . The method of  claim 2  wherein the benzyl alcohol ether compound has an absolute configuration predominantly of (4R,5R).  
     
     
         45 . The method of  claim 2  wherein the benzyl alcohol ether compound has an absolute configuration predominantly of (4S,5S).  
     
     
         46 . The method of  claim 2  wherein the derivatization conditions comprise contacting the benzyl alcohol ether compound with a halogenating agent.  
     
     
         47 . The method of  claim 46  wherein the halogenating agent is selected from the group consisting of a thionyl halide, a sulfuryl halide, a phosphorus trihalide, a phosphorus pentahalide, an oxalyl halide, and a hydrogen halide.  
     
     
         48 . The method of  claim 47  wherein the halogenating agent is a chlorinating agent.  
     
     
         49 . The method of  claim 47  wherein the halogenating agent is selected from the group consisting of thionyl chloride, phosphorus trichloride, phosphorus pentachloride, and hydrogen chloride.  
     
     
         50 . The method of  claim 49  wherein the halogenating agent is selected from the group consisting of thionyl chloride, phosphorus trichloride, and phosphorus pentachloride.  
     
     
         51 . The method of  claim 49  wherein the halogenating agent is thionyl chloride.  
     
     
         52 . The method of  claim 47  wherein the halogenating agent comprises a mixture of triphenylphosphine and a carbon tetrahalide.  
     
     
         53 . The method of  claim 47  wherein the halogenating agent comprises a mixture of triphenylphosphine and carbon tetrachloride.  
     
     
         54 . The method of  claim 2  further comprising a step in which a benzyl alcohol ether compound having the structure of Formula (6)  
       
         
           
           
               
               
           
         
       
       is prepared wherein the step comprises contacting a phenol compound having the structure of Formula (4)  
       
         
           
           
               
               
           
         
       
       with a substituted xylene compound having the structure of Formula (5)  
       
         
           
           
               
               
           
         
       
       under substitution conditions to produce the benzyl alcohol ether compound (6) wherein X 2  is a leaving group.  
     
     
         55 . The method of  claim 54  wherein the phenol compound has an absolute configuration of (4R,5R).  
     
     
         56 . The method of  claim 54  wherein the phenol compound has an absolute configuration of (4S,5S).  
     
     
         57 . The method of  claim 54  wherein X 2  is selected from the group consisting of halo, methanesulfonato, toluenesulfonato, benzenesulfonato, and trifluoromethanesulfonato.  
     
     
         58 . The method of  claim 57  wherein X 2  is selected from the group consisting of chloro, bromo, and iodo.  
     
     
         59 . The method of  claim 58  wherein X 2  is chloro.  
     
     
         60 . The method of  claim 54  wherein R 1  and R 2  independently are C 1  to about C 10  hydrocarbyl.  
     
     
         61 . The method of  claim 60  wherein R 1  and R 2  independently are C 1  to about C 5  hydrocarbyl.  
     
     
         62 . The method of  claim 61  wherein R 1  and R 2  are both butyl.  
     
     
         63 . The method of  claim 61  wherein one of R 1  and R 2  is ethyl and the other of R 1  and R 2  is butyl.  
     
     
         64 . The method of  claim 54  wherein the contacting of the phenol compound with the substituted xylene compound is performed in the presence of a solvent.  
     
     
         65 . The method of  claim 64  wherein the solvent comprises an amide.  
     
     
         66 . The method of  claim 65  wherein the amide is selected from the group consisting of dimethylformamide and N,N-dimethylacetamide.  
     
     
         67 . The method of  claim 54  wherein the contacting of the phenol compound with the substituted xylene compound is performed in the presence of a base.  
     
     
         68 . The method of  claim 67  wherein the base comprises a compound selected from the group consisting of a metal hydroxide, a metal alcoholate, a metal hydride, an alkyl metal complex, and an amide base.  
     
     
         69 . The method of  claim 68  wherein the base comprises a metal hydroxide.  
     
     
         70 . The method of  claim 2  further comprising a deprotecting step wherein a protected phenol compound having the structure of Formula (7)  
       
         
           
           
               
               
           
         
       
       is deprotected to form a phenol compound having the structure of Formula (4)  
       
         
           
           
               
               
           
         
       
       wherein R 6  is a protecting group.  
     
     
         71 . The method of  claim 70  wherein R 6  is a C 1  to about C 10  hydrocarbyl group.  
     
     
         72 . The method of  claim 71  wherein R 6  is a C 1  to about C 10  alkyl group.  
     
     
         73 . The method of  claim 72  wherein R 6  is a C 1  to about C 5  alkyl group.  
     
     
         74 . The method of  claim 73  wherein R 6  is methyl.  
     
     
         75 . The method of  claim 71  wherein the deprotecting step comprises treating the protected phenol compound with a deprotection reagent.  
     
     
         76 . The method of  claim 75  wherein the deprotecting step comprises treating the protected phenol compound with a deprotecting reagent comprising a compound selected from the group consisting of a boron trihalide, a hydrogen halide, and a metal hydrocarbyl thiolate.  
     
     
         77 . The method of  claim 76  wherein the deprotecting reagent is selected from the group consisting of boron tribromide, boron trichloride, hydrogen iodide, hydrogen bromide, and hydrogen chloride.  
     
     
         78 . The method of  claim 77  wherein the deprotecting reagent is selected from the group consisting of boron tribromide and boron trichloride.  
     
     
         79 . The method of  claim 77  wherein the deprotecting reagent is boron tribromide.  
     
     
         80 . The method of  claim 77  wherein the deprotecting reagent is a metal hydrocarbyl thiolate.  
     
     
         81 . The method of  claim 80  wherein the deprotecting reagent is a lithium hydrocarbyl thiolate.  
     
     
         82 . The method of  claim 81  wherein the deprotecting reagent is a lithium C 1  to about C 10  alkyl thiolate.  
     
     
         83 . The method of  claim 82  wherein the deprotecting reagent is lithium ethanethiolate.  
     
     
         84 . The method of  claim 75  wherein the deprotecting reagent comprises a sulfonic acid in combination with methionine.  
     
     
         85 . The method of  claim 84  wherein the deprotecting reagent comprises methanesulfonic acid in combination with methionine.  
     
     
         86 . The method of  claim 85  wherein the deprotecting step is performed substantially neat.  
     
     
         87 . The method of  claim 85  wherein the deprotecting step is performed in the presence of a solvent.  
     
     
         88 . The method of  claim 87  wherein the solvent comprises a compound selected from the group consisting of an alkane, an aromatic solvent, a chlorinated solvent, a sulfonic acid, and an inorganic solvent.  
     
     
         89 . The method of  claim 70  wherein the protected phenol compound has an absolute configuration of (4R,5R).  
     
     
         90 . The method of  claim 70  wherein the protected phenol compound has an absolute configuration of (4S,5S).  
     
     
         91 . The method of  claim 2  further comprising a cyclization step wherein an amino sulfur oxide aldehyde compound having the structure of Formula  
       
         
           
           
               
               
           
         
       
       is treated under cyclization conditions to form a protected phenol compound having the structure of Formula (7a)  
       
         
           
           
               
               
           
         
       
       wherein R 6  is a protecting group, and y is 1 or 2.  
     
     
         92 . The method of  claim 91  wherein R 6  is a C 1  to about C 10  hydrocarbyl group.  
     
     
         93 . The method of  claim 92  wherein R 6  is a C 1  to about C 10  alkyl group.  
     
     
         94 . The method of  claim 93  wherein R 6  is a C 1  to about C 5  alkyl group.  
     
     
         95 . The method of  claim 94  wherein R 6  is methyl.  
     
     
         96 . The method of  claim 91  wherein the cyclization conditions comprise treating the amino sulfur oxide aldehyde with a base.  
     
     
         97 . The method of  claim 96  wherein the base comprises a compound selected from the group consisting of MOR 11 , a metal hydroxide, and an alkyl metal complex, wherein R 11  is a C 1  to about C 10  hydrocarbyl group and M is an alkali metal.  
     
     
         98 . The method of  claim 97  wherein the base comprises MOR 11 .  
     
     
         99 . The method of  claim 98  wherein M is selected from the group consisting of sodium, lithium, and potassium.  
     
     
         100 . The method of  claim 98  wherein R 11  is a C 1  to about C 10  alkyl group.  
     
     
         101 . The method of  claim 100  wherein R 11  is a C 1  to about C5 alkyl group.  
     
     
         102 . The method of  claim 101  wherein R 11  is selected from the group consisting of methyl, ethyl, isopropyl, and tert-butyl.  
     
     
         103 . The method of  claim 102  wherein R 11  is tert-butyl.  
     
     
         104 . The method of  claim 103  wherein the base is potassium t-butoxide.  
     
     
         105 . The method of  claim 91  wherein the cyclization conditions comprise a solvent.  
     
     
         106 . The method of  claim 105  wherein the solvent comprises a hydrophilic solvent.  
     
     
         107 . The method of  claim 106  wherein the solvent is selected from the group consisting of an ether and an alcohol.  
     
     
         108 . The method of  claim 106  wherein the solvent is an ether.  
     
     
         109 . The method of  claim 108  wherein the solvent is selected from the group consisting of tetrahydrofuran, tetrahydrofuran, diethyl ether, methyl t-butyl ether, 1,4-dioxane, glyme, and diglyme.  
     
     
         110 . The method of  claim 109  wherein the solvent is tetrahydrofuran.  
     
     
         111 . The method of  claim 107  wherein the solvent is an alcohol.  
     
     
         112 . The method of  claim 111  wherein the solvent is selected from the group consisting of methanol, ethanol, propanol, isopropyl alcohol, butanol, sec-butyl alcohol, isobutyl alcohol, and t-butyl alcohol.  
     
     
         113 . The method of  claim 91  wherein y is 1.  
     
     
         114 . The method of  claim 113  further comprising an oxidation step in which the amino sulfur oxide aldehyde compound is treated under oxidation conditions to form an amino sulfone aldehyde compound having the structure of Formula (8)  
       
         
           
           
               
               
           
         
       
     
     
         115 . The method of  claim 91  wherein y is 2.  
     
     
         116 . The method of  claim 2  further comprising an reductive alkylation step in which a nitro sulfur oxide aldehyde compound having the structure of Formula (9a)  
       
         
           
           
               
               
           
         
       
       is reductively alkylated to form an amino sulfur oxide aldehyde compound having the structure of Formula (8a)  
       
         
           
           
               
               
           
         
       
       wherein R 6  is a protecting group, and z is 0, 1, or 2.  
     
     
         117 . The method of  claim 116  wherein z is 0 or 1.  
     
     
         118 . The method of  claim 117  further comprising an oxidation step in which the nitro sulfur oxide aldehyde compound is treated under oxidation conditions to form a nitro sulfone aldehyde compound having the structure of Formula (9)  
       
         
           
           
               
               
           
         
       
     
     
         119 . The method of  claim 116  wherein z is 2.  
     
     
         120 . The method of  claim 2  further comprising a step for the preparation of an aniline sulfur oxide compound having the structure of Formula (39)  
       
         
           
           
               
               
           
         
       
       wherein the step comprises reducing a nitro sulfur oxide aldehyde compound having the structure of Formula (9a)  
       
         
           
           
               
               
           
         
       
       to form the aniline sulfur oxide compound, wherein R 6  is a protecting group, and z is 0, 1, or 2.  
     
     
         121 . The method of  claim 120  further comprising a methylation step in which the aniline sulfur oxide compound is treated under methylation conditions to form an amino sulfur oxide aldehyde compound having the structure of Formula (8a)  
       
         
           
           
               
               
           
         
       
     
     
         122 . The method of  claim 2  further comprising an oxidation step in which a nitro sulfide aldehyde compound having the structure of Formula (10)  
       
         
           
           
               
               
           
         
       
       is oxidized to form a nitro sulfone aldehyde compound having the structure of Formula (9a)  
       
         
           
           
               
               
           
         
       
       wherein R 6  is a protecting group and z is 1 or 2.  
     
     
         123 . The method of  claim 122  wherein z is 2.  
     
     
         124 . The method of  claim 123  wherein z is 1.  
     
     
         125 . The method of  claim 124  in which the oxidation conditions comprise enantioselective oxidation conditions.  
     
     
         126 . The method of  claim 2  further comprising a sulfide-forming step in which a substituted diphenyl methane compound having the structure of Formula (11)  
       
         
           
           
               
               
           
         
       
       is coupled with a substituted propionaldehyde compound having the structure of Formula (12)  
       
         
           
           
               
               
           
         
       
       in the presence of a source of sulfur to form a nitro sulfide aldehyde having the structure of Formula (10)  
       
         
           
           
               
               
           
         
       
       wherein R 6  is a protecting group; X 3  is an aromatic substitution leaving group; and X 4  is a nucleophilic substitution leaving group.  
     
     
         127 . The method of  claim 2  further comprising a reduction step in which a substituted benzophenone compound having the structure of Formula (13)  
       
         
           
           
               
               
           
         
       
       is reduced to form a substituted diphenyl methane compound having the structure of Formula (11)  
       
         
           
           
               
               
           
         
       
       wherein R 6  is a protecting group and X 3  is an aromatic substitution leaving group.  
     
     
         128 . The method of  claim 2  further comprising an acylation step in which a protected phenol compound having the structure of Formula (14)  
       
         
           
           
               
               
           
         
       
       is treated with a substituted benzoyl compound having the structure of Formula (15)  
       
         
           
           
               
               
           
         
       
       under acylation conditions to produce a substituted benzophenone compound having the structure of Formula (13)  
       
         
           
           
               
               
           
         
       
       wherein R 6  is a protecting group, X 3  is an aromatic substitution leaving group, and X 5  is selected from the group consisting of hydroxy and halo.  
     
     
         129 . The method of  claim 2  further comprising one or more steps in which an amino sulfone aldehyde compound having the structure of Formula (17)  
       
         
           
           
               
               
           
         
       
       is prepared wherein an alkenyl sulfone aldehyde compound having the structure of Formula (16)  
       
         
           
           
               
               
           
         
       
       is reduced and reductively alkylated to form the amino sulfone aldehyde compound (17), wherein R 1  is a C 1  to about C 20  hydrocarbyl group, R 6  is a protecting group, and R 12  is a C 1  to about C 10  hydrocarbyl group.  
     
     
         130 . The method of  claim 2  further comprising a thermolysis step wherein an acetal compound having the structure of Formula (18)  
       
         
           
           
               
               
           
         
       
       is thermolyzed to form an alkenyl sulfone aldehyde compound having the structure of Formula (16)  
       
         
           
           
               
               
           
         
       
       wherein 
 R 1  is a C 1  to about C 20  hydrocarbyl group;  
 R 6  is a protecting group;  
 R 7  is selected from the group consisting of H and C 1  to about C 17  hydrocarbyl; and  
 R 13  is selected from the group consisting of H and C 1  to about C 20  hydrocarbyl.  
 
     
     
         131 . The method of  claim 130  in which R 13  is a group having the structure of Formula (43)  
       
         
           
           
               
               
           
         
       
     
     
         132 . The method of  claim 2  further comprising an acetal-forming step in which a monoalkyl sulfone aldehyde compound having the structure of Formula (19)  
       
         
           
           
               
               
           
         
       
       is reacted with an allyl alcohol compound having the structure of Formula (20)  
       
         
           
           
               
               
           
         
       
       optionally in the presence of a hydroxylated solvent having the structure HOR 13  to form an acetal compound having the structure of Formula (18)  
       
         
           
           
               
               
           
         
       
       wherein: 
 R 1  is a C 1  to about C 20  hydrocarbyl;  
 R 6  is a protecting group;  
 R 7  is selected from the group consisting of H and a C 1  to about C 17  hydrocarbyl; and  
 R 13  is selected from the group consisting of H and C 1  to about C 20  hydrocarbyl.  
 
     
     
         133 . The method of  claim 132  in which R 13  is a group having the structure of Formula (43)  
       
         
           
           
               
               
           
         
       
     
     
         134 . The method of  claim 133  wherein R 7  is a C 1  to about C 10  hydrocarbyl.  
     
     
         135 . The method of  claim 134  wherein R 7  is a C 1  to about C 5  hydrocarbyl.  
     
     
         136 . The method of  claim 135  wherein R 7  is methyl.  
     
     
         137 . The method of  claim 2  further comprising a sulfone-forming step in which a substituted diphenyl methane compound having the structure of Formula (11)  
       
         
           
           
               
               
           
         
       
       is reacted under sulfination conditions and coupled with a 2-substituted acrolein compound having the structure of Formula (21)  
       
         
           
           
               
               
           
         
       
       to form a monoalkyl sulfone aldehyde compound having the structure of Formula (19)  
       
         
           
           
               
               
           
         
       
       wherein: 
 R 1  is a C 1  to about C 20  hydrocarbyl;  
 R 6  is a protecting group; and  
 X 3  is an aromatic substitution leaving group.  
 
     
     
         138 . A method for the preparation of a benzylammonium compound having the structure of Formula (1)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises the steps of: 
 (a) treating a protected phenol compound having the structure of Formula (14)  
                     
  with a substituted benzoyl compound having the structure of Formula (15)  
                     
  under acylation conditions to produce a substituted benzophenone compound having the structure of Formula (13)  
                     
 (b) reducing the substituted benzophenone compound to produce a substituted diphenyl methane compound having the structure of Formula (11)  
                     
 (c) coupling the substituted diphenyl methane compound with a substituted propionaldehyde compound having the structure of Formula (10)  
                     
  in the presence of a source of sulfur to form a nitro sulfide aldehyde compound having the structure of Formula (10)  
                     
 (d) oxidizing the nitro sulfide aldehyde compound to form a nitro sulfone aldehyde compound having the structure of Formula (9)  
                     
 (e) reductively alkylating the nitro sulfone aldehyde compound to form an amino sulfone aldehyde compound having the structure of Formula (8)  
                     
 (f) treating the amino sulfone aldehyde compound under cyclization conditions to form protected phenol compound having the  
                     
 (g) deprotecting the protected phenol compound to form a phenol compound having the structure of Formula (4)  
                     
 (h) coupling the phenol compound with a substituted xylene having the structure of Formula (5)  
                     
  under substitution conditions to produce a benzyl alcohol ether compound having the structure of Formula (6)  
                     
 (i) treating the benzyl alcohol ether compound with a leaving group-forming reagent to produce a derivatized benzyl ether compound having the structure of Formula (2)  
                     
 (j) treating the derivatized benzyl ether compound with an amine having the structure of Formula (42):  
                     
  under amination conditions to produce the benzylammonium compound;  
  wherein: 
 R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl;  
 R 3 , R 4 , and R 5  independently are selected from the group consisting of H and C 1  to about C 20  hydrocarbyl, wherein optionally one or more carbon atom of the hydrocarbyl is replaced by O, N, or S, and wherein optionally two or more of R 3 , R 4 , and R 5  taken together with the atom to which they are attached form a cyclic structure;  
 R 6  is a protecting group;  
 X and X 4  independently are nucleophilic leaving groups;  
 X 2  is selected from the group consisting of chloro, bromo, iodo, methanesulfonato, trifluoromethanesulfonato, benzenesulfonato, and toluenesulfonato;  
 X 3  is an aromatic substitution leaving group; and  
 X 5  is selected from the group consisting of hydroxy and halo.  
 
 
     
     
         139 . The method of  claim 138  further comprising an enantiomeric enrichment step.  
     
     
         140 . The method of  claim 139  wherein the benzylammonium compound produced by the method comprises a (4R,5R) enantiomer that preponderates over a (4S,5S) enantiomer.  
     
     
         141 . A method for the preparation of a derivatized benzyl ether compound having the structure of Formula (2).  
       
         
           
           
               
               
           
         
       
       wherein the method comprises treating a benzyl alcohol ether compound having the structure of Formula (6)  
       
         
           
           
               
               
           
         
       
       with a halogenating agent to form the derivatized benzyl ether compound, wherein R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl, and X is halo.  
     
     
         142 . The method of  claim 141  wherein the derivatized benzyl ether compound produced by the method comprises a (4R,5R) enantiomer that preponderates over a (4S,5S) enantiomer.  
     
     
         143 . A method for the preparation of a benzyl alcohol ether compound having the structure of Formula (6)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises contacting a phenol compound having the structure of Formula (4)  
       
         
           
           
               
               
           
         
       
       with a substituted xylene compound having the structure of Formula (5)  
       
         
           
           
               
               
           
         
       
       under substitution conditions to produce the benzyl alcohol ether compound, wherein R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl, and X 2  is selected from the group consisting of chloro, bromo, iodo, methanesulfonato, trifluoromethylsuflonato, and toluenesulfonato.  
     
     
         144 . The method of  claim 143  wherein R 1  and R 2  independently are C 1  to about C 10  hydrocarbyl.  
     
     
         145 . The method of  claim 144  wherein R 1  and R 2  independently are C 1  to about C 5  hydrocarbyl.  
     
     
         146 . The method of  claim 145  wherein R 1  and R 2  are both butyl.  
     
     
         147 . The method of  claim 145  wherein one of R 1  and R 2  is ethyl and the other of R 1  and R 2  is butyl.  
     
     
         148 . The method of  claim 143  wherein the contacting of the phenol compound with the substituted xylene compound is performed in the presence of a solvent.  
     
     
         149 . The method of  claim 148  wherein the solvent comprises a compound selected from the group consisting of an aromatic solvent, an amide, an ester, a ketone, an ether, and a sulfoxide.  
     
     
         150 . The method of  claim 149  wherein the solvent comprises an amide.  
     
     
         151 . The method of  claim 150  wherein the amide is selected from the group consisting of dimethylformamide and N,N-dimethylacetamide.  
     
     
         152 . The method of  claim 149  wherein the solvent comprises an aprotic solvent.  
     
     
         153 . The method of  claim 143  wherein the contacting of the phenol compound with the substituted xylene compound is performed in the presence of a base.  
     
     
         154 . The method of  claim 153  wherein the base comprises a compound selected from the group consisting of a metal hydroxide, a metal alcoholate, a metal hydride, an alkyl metal complex, and an amide base.  
     
     
         155 . The method of  claim 154  wherein the base comprises a metal hydroxide.  
     
     
         156 . The method of  claim 155  wherein the metal hydroxide is selected from the group consisting of sodium hydroxide, lithium hydroxide, and calcium hydroxide.  
     
     
         157 . The method of  claim 156  wherein the metal hydroxide is sodium hydroxide.  
     
     
         158 . The method of  claim 143  wherein the benzyl alcohol ether compound produced by the method comprises a (4R,5R) enantiomer that preponderates over a (4S,5S) enantiomer.  
     
     
         159 . A method for the preparation of a phenol compound having the structure of Formula (4)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises deprotecting a protected phenol compound having the structure of Formula (7)  
       
         
           
           
               
               
           
         
       
       to form the phenol compound, wherein R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl, and R 6  is a protecting group.  
     
     
         160 . The method of  claim 159  wherein the phenol compound produced by the method comprises a (4R,5R) enantiomer that preponderates over a (4S,5S) enantiomer.  
     
     
         161 . A method for the preparation of a protected phenol compound having the structure of Formula (7)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises cyclizing an amino sulfone aldehyde compound having the structure of Formula (8)  
       
         
           
           
               
               
           
         
       
       under cyclization conditions to form the protected phenol compound, wherein R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl, and R 6  is a protecting group.  
     
     
         162 . The method of  claim 161  wherein the protected phenol compound produced by the method comprises a (4R,5R) enantiomer that preponderates over a (4S,5S) enantiomer.  
     
     
         163 . A method for the preparation of an amino sulfone aldehyde compound having the structure of Formula (8)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises reductively alkylating a nitro sulfone aldehyde compound having the structure of Formula (9)  
       
         
           
           
               
               
           
         
       
       to form the amino sulfone aldehyde compound, wherein R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl, and R 6  is a protecting group.  
     
     
         164 . A method for the preparation of a nitro sulfone aldehyde compound having the structure of Formula (9)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises oxidizing a nitro sulfide aldehyde compound having the structure of Formula (10)  
       
         
           
           
               
               
           
         
       
       to form the nitro sulfone aldehyde compound, wherein R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl, and R 6  is a protecting group.  
     
     
         165 . A method for the preparation of a nitro sulfide aldehyde having the structure of Formula (10)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises coupling a substituted diphenyl methane compound having the structure of Formula (11)  
       
         
           
           
               
               
           
         
       
       with a substituted propionaldehyde compound having the structure of Formula (12)  
       
         
           
           
               
               
           
         
       
       in the presence of a source of sulfur to form the nitro sulfide aldehyde, wherein: 
 R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl;  
 R 6  is a protecting group;  
 X 3  is an aromatic substitution leaving group; and  
 X 4  is a nucleophilic substitution leaving group.  
 
     
     
         166 . A method for the preparation of a substituted diphenyl methane compound having the structure of Formula (11)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises reducing a substituted benzophenone compound having the structure of Formula (13)  
       
         
           
           
               
               
           
         
       
       to form the substituted diphenyl methane compound, wherein: 
 R 6  is a protecting group; and  
 X 3  is an aromatic substitution leaving group.  
 
     
     
         167 . A method for the preparation of a substituted benzophenone compound having the structure of Formula (13)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises reacting a protected phenol compound having the structure of Formula (14)  
       
         
           
           
               
               
           
         
       
       with a substituted benzoyl compound having the structure of Formula (15)  
       
         
           
           
               
               
           
         
       
       under acylation conditions to produce the substituted benzophenone compound, wherein: 
 R 6  is a protecting group;  
 X 3  is an aromatic substitution leaving group;  
 X 5  is selected from the group consisting of hydroxy, bromo, iodo, and —OR 14 ; and  
 R 14  is an acyl group.  
 
     
     
         168 . The method of  claim 167  wherein X5 is hydroxy.  
     
     
         169 . The method of  claim 168  wherein the acylation conditions comprise a strong protic acid.  
     
     
         170 . The method of  claim 169  wherein the strong protic acid is selected from the group consisting of sulfuric acid, a sulfonic acid, or a phosphorus oxy acid.  
     
     
         171 . The method of  claim 170  wherein the strong protic acid is a phosphorus oxy acid.  
     
     
         172 . The method of  claim 171  wherein the phosphorus oxy acid is selected from the group consisting of orthophosphoric acid, pyrophosphoric acid, and polyphosphoric acid.  
     
     
         173 . The method of  claim 171  wherein the phosphorus oxy acid comprises polyphosphoric acid.  
     
     
         174 . The method of  claim 167  wherein R 6  is a C 1  to about C 10  hydrocarbyl group.  
     
     
         175 . The method of  claim 174  wherein R 6  is a C 1  to about C 10  alkyl group.  
     
     
         176 . The method of  claim 175  wherein R 6  is a C 1  to about C 5  alkyl group.  
     
     
         177 . The method of  claim 176  wherein R 6  is methyl.  
     
     
         178 . A method for the preparation of a substituted benzophenone compound having the structure of Formula (13)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises reacting an aryl metal complex having the structure of Formula (56)  
       
         
           
           
               
               
           
         
       
       with a substituted benzoyl compound having the structure of Formula (15)  
       
         
           
           
               
               
           
         
       
       under acylation conditions to produce the substituted benzophenone compound, wherein: 
 R 6  is a protecting group;  
 L is a metal-containing moiety;  
 X 3  is an aromatic substitution leaving group;  
 X 5  is selected from the group consisting of halo and —OR 14 ; and  
 R 14  is an acyl group.  
 
     
     
         179 . The method of  claim 178  wherein L is selected from the group consisting of MgX 6 , Na, and Li, wherein X 6  is a halogen.  
     
     
         180 . A method for the preparation of an amino sulfone aldehyde compound having the structure of Formula (17)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises reducing and reductively alkylating an alkenyl sulfone aldehyde compound having the structure of Formula (16)  
       
         
           
           
               
               
           
         
       
       to form the amino sulfone aldehyde compound  
       wherein R 1  is a C 1  to about C 20  hydrocarbyl group; R 6  is a protecting group; and R 7  is selected from the group consisting of H and C1 to about C17 hydrocarbyl.  
     
     
         181 . A method for the preparation of an alkenyl sulfone aldehyde compound having the structure of Formula (16)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises thermolyzing an acetal compound having the structure of Formula (18)  
       
         
           
           
               
               
           
         
       
       to form the alkenyl sulfone aldehyde compound, wherein 
 R 1  is a C 1  to about C 20  hydrocarbyl group;  
 R 6  is a protecting group;  
 R 7  is selected from the group consisting of H and C 1  to about C 17  hydrocarbyl; and  
 R 13  is selected from the group consisting of H and C 1  to about C 20  hydrocarbyl.  
 
     
     
         182 . A method for the preparation of an acetal compound having the structure of Formula (18)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises reacting a monoalkyl sulfone aldehyde compound having the structure of Formula (19)  
       
         
           
           
               
               
           
         
       
       with an allyl alcohol having the structure of Formula (20)  
       
         
           
           
               
               
           
         
       
       optionally in the presence of a hydroxylated solvent having the structure HOR 13  to form the acetal compound, wherein: 
 R 1  is a C 1  to about C 20  hydrocarbyl;  
 R 6  is a protecting group;  
 R 7  is selected from the group consisting of H and a C 1  to about C 17  hydrocarbyl; and  
 R 13  is selected from the group consisting of H and C 1  to about C 20  hydrocarbyl.  
 
     
     
         183 . The method of  claim 182  in which R 13  is a group having the structure of Formula (43)  
       
         
           
           
               
               
           
         
       
     
     
         184 . The method of  claim 183  wherein R 7  is a C 1  to about C 10  hydrocarbyl.  
     
     
         185 . The method of  claim 184  wherein R 7  is a C 1  to about C 5  hydrocarbyl.  
     
     
         186 . The method of  claim 185  wherein R 7  is methyl.  
     
     
         187 . A method for the preparation of a monoalkyl sulfone aldehyde compound having the structure of Formula (19)  
       
         
           
           
               
               
           
         
       
       wherein the method comprises reacting a substituted diphenyl methane compound having the structure of Formula (11)  
       
         
           
           
               
               
           
         
       
       under sulfination conditions to produce a sulfination mixture and contacting the sulfination mixture with a 2-hydrocarbyl acrolein compound having the structure of Formula (21)  
       
         
           
           
               
               
           
         
       
       thereby forming the monoalkyl sulfone aldehyde compound, wherein: 
 R 1  is a C to about C 20  hydrocarbyl;  
 R 6  is a protecting group; and  
 X 3  is an aromatic substitution leaving group.  
 
     
     
         188 . A method for the preparation of a 3-sulfur-propionaldehyde olefin compound having the structure of Formula 49 
       
         
           
           
               
               
           
         
       
       wherein the method comprises contacting a 3-sulfur-propionaldehyde compound having the structure of Formula 48 
       
         
           
           
               
               
           
         
       
       with an allyl alcohol compound having the structure of Formula 50 
       
         
           
           
               
               
           
         
       
       in the presence of a source of acid, thereby forming the 3-sulfur-propionaldehyde olefin compound, wherein: 
 R 15  is selected from the group consisting of H, alkyl, alkenyl, alkynyl, aryl, alkylaryl, arylalkylaryl, and acyl, wherein alkyl, alkenyl, alkynyl, aryl, alkylaryl, arylalkylaryl, and acyl optionally are substituted with at least one R 22  group;  
 R 16 , R 17 , R 21a , and R 21b  are independently selected from the group consisting of H and hydrocarbyl;  
 R 22  is selected from the group consisting of H, —NO 2 , amino, C 1  to about C 10 alkylamino, di(C 1  to about C 10 )alkylamino, C 1  to about C 10  alkylthio, hydroxy, C 1  to about C 10 alkoxy, cyanato, isocyanato, halogen, OR 6 , SR 6 , SR 6 R 6a , and NR 6 R 6a ;  
 R 6  and R 6a  independently are selected from the group consisting of H and a protecting group; and  
 q is 0, 1, or 2.  
 
     
     
         189 . The method of  claim 188  wherein R 15  is selected from the group consisting of aryl, alkylaryl, and arylalkylaryl.  
     
     
         190 . The method of  claim 188  wherein R 15  is substituted with at least one R 22  group.  
     
     
         191 . The method of  claim 190  wherein R 15  is arylalkylaryl optionally substituted with at least one R 22  group.  
     
     
         192 . The method of  claim 189  wherein R 15  is 2-(phenylmethyl)phenyl.  
     
     
         193 . The method of  claim 192  wherein R 15  is substituted with at least one R 22  group.  
     
     
         194 . The method of  claim 188  wherein R 16  is hydrocarbyl.  
     
     
         195 . The method of  claim 194  wherein R 16  is a C 1  to about C 10 hydrocarbyl.  
     
     
         196 . The method of  claim 195  wherein R 16  is a C 1  to about C 5  hydrocarbyl.  
     
     
         197 . The method of  claim 196  wherein R 16  is selected from the group consisting of ethyl and butyl.  
     
     
         198 . The method of  claim 188  wherein R 17  is hydrocarbyl.  
     
     
         199 . The method of  claim 188  wherein q is 2.  
     
     
         200 . The method of  claim 188  wherein the contacting is performed at a temperature of about 0° C. to about 200° C.  
     
     
         201 . The method of  claim 200  wherein the contacting is performed at a temperature of about 20° C. to about 150° C.  
     
     
         202 . The method of  claim 201  wherein the contacting is performed at a temperature of about 30° C. to about 135° C.  
     
     
         203 . The method of  claim 202  wherein the contacting is performed at a temperature of about 30° C. to about 100° C.  
     
     
         204 . The method of  claim 188  wherein the contacting is performed in the presence of a solvent.  
     
     
         205 . The method of  claim 203  further comprising a step in which the solvent is azeotropically removed.  
     
     
         206 . A method of treating a diastereomer of a tetrahydrobenzothiepine compound having the structure of Formula (22)  
       
         
           
           
               
               
           
         
         wherein Formula (22) comprises a (4,5)-diastereomer selected from the group consisting of a (4S,5S) diastereomer, a (4R,5R) diastereomer, a (4R,5S) diastereomer, and a (4S,5R) diastereomer,  
         to produce a mixture comprising the (4S,5S) diastereomer and the (4R,5R) diastereomer,  
         wherein the method comprises contacting a base with a feedstock composition comprising the diastereomer of the tetrahydrobenzothiepine compound, thereby producing a mixture of diastereomers of the tetrahydrobenzothiepine compound; and wherein 
 R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl;  
 R 8  is selected from the group consisting of H, hydrocarbyl, heterocyclyl, ((hydroxyalkyl)aryl)-alkyl, ((cycloalkyl)alkylaryl)alkyl, ((heterocycloalkyl)alkylaryl)alkyl, ((quaternary heterocycloalkyl)alkylaryl)alkyl, heteroaryl, quaternary heterocycle, quaternary heteroaryl, and quaternary heteroarylalkyl,  
 wherein hydrocarbyl, heterocycle, heteroaryl, quaternary heterocycle, quaternary heteroaryl, and quaternary heteroarylalkyl optionally have one or more carbons replaced by a moiety selected from the group consisting of O, NR 3 , N + R 3 R 4 A − , S, SO, SO 2 , S + R 3 A − , PR 3 , P + R 3 R 4 A − , P(O)R 3 , phenylene, carbohydrate, amino acid, peptide, and polypeptide, and  
 R 8  is optionally substituted with one or more moieties selected from the group consisting of sulfoalkyl, quaternary heterocycle, quaternary heteroaryl, OR 3 , NR 3 R 4 , N + R 3 R 4 R 5 A − , SR 3 , S(O)R 3 , SO 2 R 3 , SO 3 R 3 , oxo, CO 2 R 3 , CN, halogen, CONR 3 R 4 , SO 2 OM, SO 2 NR 3 R 4 , PO(OR 23 )OR 24 , P + R 3 R 4 R 5 A − , S + R 3 R 4 A − , and C(O)OM;  
 R 23  and R 24  are independently selected from the substituents constituting R 3  and M;  
 A −  is a pharmaceutically acceptable anion and M is a pharmaceutically acceptable cation; and  
 R 9  is selected from the group consisting of H, hydrocarbyl, hydroxyalkyl, alkoxyalkyl, aminoalkyl, alkylaminoalkyl, ammoniumalkyl, polyalkoxyalkyl, heterocyclyl, heteroaryl, quaternary heterocycle, quaternary heteroaryl, OR 3 , NR 3 R 4 , N + R 3 R 4 R 5 A − , SR 3 , S(O)R 3 , SO 2 R 3 , SO 3 R 3 , oxo, CO 2 R 3 , CN, halogen, NCO, CONR 3 R 4 , SO 2 OM, SO 2 NR 3 R 4 , PO(OR 23 )OR 24 , P + R 3 R 4 R 5 A − , S + R 3 R 4 A − , and C(O)OM;  
 R 3 , R 4 , and R 5  independently are selected from the group consisting of H and C 1  to about C 20  hydrocarbyl, wherein optionally one or more carbon atom of the hydrocarbyl is replaced by O, N, or S, and wherein optionally two or more of R 3 , R 4 , and R 5  taken together with the atom to which they are attached form a cyclic structure;  
 n is a number from 0 to 4; and  
 x is 1 or 2.  
 
       
     
     
         207 . The method of  claim 206  wherein the base is selected from the group consisting of an alkali metal hydroxide, an alkaline earth metal hydroxide, an alkali metal alkoxide, a metal hydride, an alkali metal amide, and an alkali metal hydrocarbyl base.  
     
     
         208 . The method of  claim 207  wherein the base is selected from the group consisting of an alkali metal hydroxide, an alkaline earth metal hydroxide, an alkali metal alkoxide, and an alkali metal amide.  
     
     
         209 . The method of  claim 208  wherein the base is an alkali metal alkoxide.  
     
     
         210 . The method of  claim 209  wherein the base is selected from the group consisting of a sodium alkoxide and a potassium alkoxide.  
     
     
         211 . The method of  claim 210  wherein the base is potassium t-butoxide.  
     
     
         212 . The method of  claim 206  wherein R 8  is selected from the group consisting of H, C 1  to about C 20  alkyl, hydroxyalkylarylalkyl, and heterocycloalkylalkylarylalkyl.  
     
     
         213 . The method of  claim 212  wherein R 8  is selected from the group consisting of H, and C 1  to about C 20  alkyl.  
     
     
         214 . The method of  claim 213  wherein R 8  is C 1  to about C 20  alkyl.  
     
     
         215 . The method of  claim 214  wherein R 8  is C 1  to about C 10  alkyl.  
     
     
         216 . The method of  claim 217  wherein R 8  is C 1  to about C5 alkyl.  
     
     
         217 . The method of  claim 214  wherein R 8  is methyl.  
     
     
         218 . The method of  claim 206  wherein R 9  is selected from the group consisting of H, amino, alkylamino, alkoxy, and nitro.  
     
     
         219 . The method of  claim 218  wherein R 9  is selected from the group consisting of H and alkylamino.  
     
     
         220 . The method of  claim 219  wherein R 9  is alkylamino.  
     
     
         221 . The method of  claim 219  wherein R 9  is dimethylamino and n is 1.  
     
     
         222 . The method of  claim 221  wherein R 9  is in the 7-position of the tetrahydrobenzothiepine compound.  
     
     
         223 . The method of  claim 206  wherein one of R 1  and R 2  is ethyl and the other of R 1  and R 2  is butyl.  
     
     
         224 . The method of  claim 206  wherein are both R 1  and R 2  are butyl.  
     
     
         225 . The method of  claim 206  wherein the (4,5)-diastereomer is selected from the group consisting of a (4S,5S) diastereomer, a (4R,5S) diastereomer, and a (4S,5R) diastereomer.  
     
     
         226 . The method of  claim 225  wherein the (4,5)-diastereomer is a (4S,5S) diastereomer.  
     
     
         227 . The method of  claim 206  wherein the tetrahydrobenzothiepine compound has the structure of Formula (24)  
       
         
           
           
               
               
           
         
       
     
     
         228 . The method of  claim 206  wherein the feedstock composition further comprises an amino sulfone aldehyde compound having the structure of Formula (8)  
       
         
           
           
               
               
           
         
       
       wherein R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl, and R 6  is a protecting group.  
     
     
         229 . The method of  claim 228  wherein R 1  and R 2  independently are C 1  to about C 10 hydrocarbyl.  
     
     
         230 . The method of  claim 229  R 1  and R 2  independently are C 1  to about C 5  hydrocarbyl.  
     
     
         231 . The method of  claim 230  wherein one of R 1  and R 2  is ethyl and the other of R 1  and R 2  is butyl.  
     
     
         232 . The method of  claim 231  wherein both R 1  and R 2  are butyl.  
     
     
         233 . The method of  claim 228  wherein R 6  is C 1  to about C 10  hydrocarbyl.  
     
     
         234 . The method of  claim 233  wherein R 6  is methyl.  
     
     
         235 . A method of treating a diastereomer of a tetrahydrobenzothiepine compound having the structure of Formula (22)  
       
         
           
           
               
               
           
         
         wherein Formula (22) comprises a (4,5)-diastereomer selected from the group consisting of a (4S,5S) diastereomer, a (4R,5R) diastereomer, a (4R,5S) diastereomer, and a (4S,5R) diastereomer,  
         to produce a mixture comprising the (4S,5S) diastereomer and the (4R,5R) diastereomer,  
         wherein the method comprises treating the diastereomer of the tetrahydrobenzothiepine compound under elimination conditions to produce a dihydrobenzothiepine compound having the structure of Formula (23)  
         
           
             
             
                 
                 
             
           
         
          and oxidizing the dihydrobenzothiepine compound thereby producing the mixture comprising the (4S,5S) diastereomer and the (4R,5R) diastereomer, wherein 
 R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl;  
 R 8  is selected from the group consisting of H, hydrocarbyl, heterocyclyl, ((hydroxyalkyl)aryl)alkyl, ((cycloalkyl)alkylaryl)alkyl, ((heterocycloalkyl)alkylaryl)alkyl, ((quaternary heterocycloalkyl)alkylaryl)alkyl, heteroaryl, quaternary heterocycle, quaternary heteroaryl, and quaternary heteroarylalkyl,  
 wherein hydrocarbyl, heterocycle, heteroaryl, quaternary heterocycle, quaternary heteroaryl, and quaternary heteroarylalkyl optionally have one or more carbons replaced by a moiety selected from the group consisting of O, NR 3 , N + R 3 R 4 A − , S, SO, SO 2 , S + R 3 A − , PR 3 , P + R 3 R 4 A − , P(O)R 3 , phenylene, carbohydrate, amino acid, peptide, and polypeptide, and  
 R 8  is optionally substituted with one or more moieties selected from the group consisting of sulfoalkyl, quaternary heterocycle, quaternary heteroaryl, OR 3 , NR 3 R 4 , N + R 3 R 4 R 5 A − , SR 3 , S(O)R 3 , SO 2 R 3 , SO 3 R 3 , oxo, CO 2 R 3 , CN, halogen, CONR 3 R 4 , SO 2 OM, SO 2 NR R 4 , PO(OR 23 )OR 24 , P + R 3 R 4 R 5 A − , S + R 3 R 4 A − , and C(O)OM;  
 R 3 , R 4 , and R 5  independently are selected from the group consisting of H and C 1  to about C 20  hydrocarbyl, wherein optionally one or more carbon atom of the hydrocarbyl is replaced by O, N, or S, and wherein optionally two or more of R 3 , R 4 , and R 5  taken together with the atom to which they are attached form a cyclic structure;  
 R 23  and R 24  are independently selected from the substituents constituting R 3  and M;  
 A −  is a pharmaceutically acceptable anion and M is a pharmaceutically acceptable cation; and  
 R 9  is selected from the group consisting of H, hydrocarbyl, hydroxyalkyl, alkoxyalkyl, aminoalkyl, alkylaminoalkyl, ammoniumalkyl, polyalkoxyalkyl, heterocyclyl, heteroaryl, quaternary heterocycle, quaternary heteroaryl, OR 3 , NR 3 R 4 , N + R 3 R 4 R 5 A − , SR 3 , S(O)R 3 , SO 2 R 3 , SO 3 R 3 , oxo, CO 2 R 3 , CN, halogen, NCO, CONR 3 R 4 , S 2 OM, SO 2 NR 3 R 4 , PO(OR 23 )OR 24 , P + R 3 R 4 R 5 A − , S + R 3 , R 4 A − , and C(O)OM;  
 n is a number from 0 to 4;  
 X 7  is selected from the group consisting of S, NH, and O; and  
 x is 0, 1, or 2.  
 
       
     
     
         236 . The method of  claim 235  wherein the elimination conditions comprise an acid.  
     
     
         237 . The method of  claim 235  wherein the elimination conditions comprise a base.  
     
     
         238 . The method of  claim 235  wherein the elimination conditions comprise derivatizing the diastereomer of a tetrahydrobenzothiepine compound to form a tetrahydrobenzothiepine derivative having an elimination-labile group at the 4-position, and eliminating the elimination-labile group to form the dihydrobenzothiepine compound.  
     
     
         239 . The method of  claim 235  wherein the oxidation step comprises an alcohol-forming step in which the dihydrobenzothiepine compound is reacted under alcohol-forming conditions to produce a mixture of diastereomers of the tetrahydrobenzothiepine compound.  
     
     
         240 . The method of  claim 235  wherein the (4,5)-diastereomer is selected from the group consisting of a (4S,5S) diastereomer, a (4R,5S) diastereomer, and a (4S,5R) diastereomer.  
     
     
         241 . The method of  claim 240  wherein the (4,5)-diastereomer is a (4S,5S) diastereomer.  
     
     
         242 . The method of  claim 235  wherein the tetrahydrobenzothiepine compound has the structure of Formula (24)  
       
         
           
           
               
               
           
         
       
       and the dihydrobenzothiepine compound has the structure of Formula (25)  
       
         
           
           
               
               
           
         
       
     
     
         243 . A compound having the structure of Formula (2)  
       
         
           
           
               
               
           
         
       
       wherein R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl and X is selected from the group consisting of Br, I, and a nucleophilic substitution leaving group covalently bonded to the compound via an oxygen atom.  
     
     
         244 . The compound of  claim 243  wherein R 1  and R 2  independently are C 1  to about C 10  hydrocarbyl.  
     
     
         245 . The compound of  claim 244  wherein R 1  and R 2  independently are C 1  to about C 5  hydrocarbyl.  
     
     
         246 . The compound of  claim 245  wherein one of R 1  and R 2  is ethyl and the other of R 1  and R 2  is butyl.  
     
     
         247 . The compound of  claim 245  wherein R 1  and R 2  are both butyl.  
     
     
         248 . The compound of  claim 243  wherein X is selected from the group consisting of Br, I, and hydroxy.  
     
     
         249 . The compound of  claim 248  wherein X is selected from the group consisting of Br and I.  
     
     
         250 . The compound of  claim 249  wherein X is chloro.  
     
     
         251 . The compound of  claim 248  wherein X is hydroxy.  
     
     
         252 . The compound of  claim 243  having the structure of Formula (26)  
       
         
           
           
               
               
           
         
       
     
     
         253 . The compound of  claim 252  having a (4R,5R) absolute configuration.  
     
     
         254 . The compound of  claim 243  having the structure of Formula (27)  
       
         
           
           
               
               
           
         
       
     
     
         255 . The compound of  claim 254  having a (4R,5R) absolute configuration.  
     
     
         256 . A compound having the structure of Formula (28)  
       
         
           
           
               
               
           
         
       
     
     
         257 . The compound of  claim 256  having a (4R,5R) absolute configuration.  
     
     
         258 . A compound having the structure of Formula (24)  
       
         
           
           
               
               
           
         
       
       wherein Formula (22) represents a (4,5)-diastereomer selected from the group consisting of a (4S,5S) diastereomer, a (4R,5R) diastereomer, a (4R,5S) diastereomer, and a (4S,5R) diastereomer.  
     
     
         259 . The compound of  claim 258  wherein the (4,5)-diastereomer is a (4R,5R) diastereomer.  
     
     
         260 . A compound having the structure of Formula (29)  
       
         
           
           
               
               
           
         
       
     
     
         261 . A compound having the structure of Formula (30)  
       
         
           
           
               
               
           
         
       
     
     
         262 . 2-Bromomethyl-2-butylhexanal.  
     
     
         263 . 2-Bromomethyl-2-butylhexanol.  
     
     
         264 . 1-Acetato-2-butyl-2-(hydroxymethyl)hexane.  
     
     
         265 . A compound having the structure of Formula (31)  
       
         
           
           
               
               
           
         
       
       wherein Formula (31) represents a compound having either an E or a Z configuration about the butenyl double bond.  
     
     
         266 . The compound of  claim 265  having an E configuration about the butenyl double bond.  
     
     
         267 . The compound of  claim 265  having a Z configuration about the butenyl double bond.  
     
     
         268 . A compound having the structure of Formula (32)  
       
         
           
           
               
               
           
         
       
     
     
         269 . A compound having the structure of Formula (32)  
       
         
           
           
               
               
           
         
       
       wherein R 6  is a protecting group and X 3  is an aromatic substitution leaving group.  
     
     
         270 . The compound of  claim 269  wherein X 3  is a halo group.  
     
     
         271 . The compound of  claim 270  wherein X 3  is chloro.  
     
     
         272 . The compound of  claim 269  wherein R 6  is C 1  to about C 20  alkyl.  
     
     
         273 . The compound of  claim 272  wherein R 6  is C 1  to about C 10 alkyl.  
     
     
         274 . The compound of  claim 273  wherein R 6  is C 1  to about Cs alkyl.  
     
     
         275 . The compound of  claim 274  wherein R 6  is methyl.  
     
     
         276 . A compound having the structure of Formula (13)  
       
         
           
           
               
               
           
         
       
       wherein R 6  is a protecting group and X 3  is an aromatic substitution leaving group.  
     
     
         277 . The compound of  claim 276  wherein X 3  is a halo group.  
     
     
         278 . The compound of  claim 277  wherein X 3  is chloro.  
     
     
         279 . The compound of  claim 276  wherein R 6  is C 1  to about C 20  alkyl.  
     
     
         280 . The compound of  claim 279  wherein R 6  is C 1  to about C 10  alkyl.  
     
     
         281 . The compound of  claim 280  wherein R 6  is C 1  to about C 5  alkyl.  
     
     
         282 . The compound of  claim 281  wherein R 6  is methyl.  
     
     
         283 . A method for the preparation of a substituted propionaldehyde compound having the structure of Formula 12 
       
         
           
           
               
               
           
         
       
       wherein the method comprises oxidizing a substituted propanol compound having the structure of Formula 35 
       
         
           
           
               
               
           
         
       
       wherein R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl and X 4  is a nucleophilic substitution leaving group.  
     
     
         284 . The method of  claim 283  wherein one of R 1  and R 2  is ethyl and the other of R 1  and R 2  is butyl.  
     
     
         285 . The method of  claim 284  wherein the substituted propionaldehyde compound has an R absolute configuration.  
     
     
         286 . The method of  claim 284  wherein the substituted propionaldehyde compound has an S absolute configuration.  
     
     
         287 . The method of  claim 283  wherein R 1  and R 2  are both butyl.  
     
     
         288 . The method of  claim 283  further comprising a step in which an acid ester having the structure of Formula 36 
       
         
           
           
               
               
           
         
       
       is solvolyzed to form the substituted propanol compound, wherein R 10  is a C 1  to about C 20  alkyl group.  
     
     
         289 . The method of  claim 283  wherein X 4  is halo.  
     
     
         290 . The method of  claim 289  wherein X 4  is bromo.  
     
     
         291 . The method of  claim 289  further comprising a step in which a diol compound having the structure of Formula 37 
       
         
           
           
               
               
           
         
       
       is reacted in the presence of carbonyl compound having the structure of Formula 38 
       
         
           
           
               
               
           
         
       
       and a source of halide to form the acid ester, wherein X 6  is selected from the group consisting of hydroxy, halogen, and —OC(O)R 18 , wherein R 18  is C 1  to about C 20  hydrocarbyl.  
     
     
         292 . The method of  claim 291  wherein the source of halide is selected from the group consisting of a source of HBr and a source of HI.  
     
     
         293 . The method of  claim 292  wherein the source of halide is a source of HBr.  
     
     
         294 . A method for the preparation of a substituted propionaldehyde compound having the structure of Formula 12 
       
         
           
           
               
               
           
         
       
       wherein the method comprises the steps of: 
 (a) reacting a diol compound having the structure of Formula 37 
                     
  in the presence of a carbonyl compound having the structure of Formula 38 
                     
  and a source of halide to form an acid ester having the structure of Formula 36 
                     
 (b) solvolyzing the acid ester to form a substituted propanol compound having the structure of Formula 35 
                     
 (c) oxidizing the substituted propanol compound to form the substituted propionaldehyde compound;  
  wherein: 
 R 1 , R 2 , R 10 , and R 18  independently are C 1  to about C 20  hydrocarbyl;  
 X 4  is a nucleophilic substitution leaving group; and  
 X 6  is selected from the group consisting of hydroxy, halo, and —OC(O)R 18 .  
 
 
     
     
         295 . The method of  claim 294  wherein the carboxylic acid equivalent is a carbonyl compound having the structure of Formula 38 
       
         
           
           
               
               
           
         
       
       wherein X 6  is selected from the group consisting of hydroxy, halo, and —OC(O)R 18 .  
     
     
         296 . The method of  claim 295  wherein R 1 , R 2 , R 10 , and R 11  independently are C 1  to about C 10  hydrocarbyl.  
     
     
         297 . The method of  claim 296  wherein R 1 , R 2 , R 10 , and R 18  independently are C 1  to about C 5  hydrocarbyl.  
     
     
         298 . The method of  claim 297  wherein one of R 1  and R 2  is ethyl and the other of R 1  and R 2  is butyl.  
     
     
         299 . The method of  claim 297  wherein both R 1  and R 2  are butyl.  
     
     
         300 . The method of  claim 299  wherein R 10  is methyl.  
     
     
         301 . The method of  claim 297  wherein R 18  is methyl.  
     
     
         302 . The method of  claim 301  wherein X 4  is halo.  
     
     
         303 . The method of  claim 302  wherein X 4  is bromo.  
     
     
         304 . The method of  claim 303  wherein X 6  is hydroxy.  
     
     
         305 . A crystalline form of a tetrahydrobenzothiepine compound having the structure of Formula 71 
       
         
           
           
               
               
           
         
       
       or an enantiomer thereof wherein the crystalline form has a melting point or a decomposition point of about 278° C. to about 285° C.  
     
     
         306 . The crystalline form of  claim 305  wherein the tetrahydrobenzothiepine compound has an absolute configuration predominantly of (4R,5R).  
     
     
         307 . The crystalline form of  claim 305  having a melting point or a decomposition point of about 280° C. to about 283° C.  
     
     
         308 . The crystalline form of  claim 307  having a melting point or a decomposition point of about 282° C.  
     
     
         309 . The crystalline form of  claim 305  having an X-ray powder diffraction pattern with peaks at about 9.2 degrees 2 theta, about 12.3 degrees 2 theta, and about 13.9 degrees 2 theta.  
     
     
         310 . The crystalline form of  claim 309  wherein the X-ray powder diffraction pattern substantially lacks peaks at about 7.2 degrees 2 theta and at about 11.2 degrees 2 theta.  
     
     
         311 . The crystalline form of  claim 305  having an X-ray powder diffraction pattern substantially as shown in plot (b) of FIG. 6.  
     
     
         312 . The crystalline form of  claim 305  having an IR spectrum with a peak at 10 about 3245 cm −1  to about 3255 cm −1 .  
     
     
         313 . The crystalline form of  claim 312  having an IR spectrum with a peak at about 1600 cm −1 .  
     
     
         314 . The crystalline form of  claim 312  having an IR spectrum with a peak at about 1288 cm −1 .  
     
     
         315 . The crystalline form of  claim 312  having an IR spectrum substantially as shown in plot (b) of FIG. 7.  
     
     
         316 . The crystalline form of  claim 305  having a solid state carbon-13 NMR spectrum with peaks at about 142.3 ppm, about 137.2 ppm, and about 125.4 ppm.  
     
     
         317 . The crystalline form of  claim 305  having a solid state carbon-13 NMR spectrum substantially as shown in plot (b) of FIG. 8.  
     
     
         318 . The crystalline form of  claim 305  that after an essentially dry sample of the crystalline form is equilibrated under about 80% relative humidity air at 25° C. gains less than 1% of its own weight.  
     
     
         319 . The crystalline form of  claim 305  that is essentially nonhygroscopic.  
     
     
         320 . A crystalline form of a tetrahydrobenzothiepine compound wherein the tetrahydrobenzothiepine compound has the structure of Formula 71 
       
         
           
           
               
               
           
         
       
       and that after a sample of the crystalline form is dried at essentially 0% relative humidity at about 25° C. under a purge of essentially dry nitrogen until the sample exhibits essentially no weight change as a function of time, the sample gains less than 1% of its own weight when equilibrated under about 80% relative humidity air at about 25° C.  
     
     
         321 . A crystalline form of a tetrahydrobenzothiepine compound wherein the tetrahydrobenzothiepine compound has the structure of Formula 71 
       
         
           
           
               
               
           
         
       
       and wherein the crystalline form is produced by crystallizing the tetrahydrobenzothiepine compound from a solvent comprising methyl ethyl ketone.  
     
     
         322 . A method for the preparation of a crystalline form of a tetrahydrobenzothiepine compound having the structure of Formula 63 
       
         
           
           
               
               
           
         
       
       wherein the method comprises crystallizing the tetrahydrobenzothiepine compound from a solvent comprising methyl ethyl ketone, and wherein: 
 R 1  and R 2  independently are C 1  to about C 20  hydrocarbyl;  
 R 3 , R 4 , and R 5  independently are selected from the group consisting of H and C 1  to about C 20  hydrocarbyl, wherein optionally one or more carbon atom of the hydrocarbyl is replaced by O, N, or S, and wherein optionally two or more of R 3 , R 4 , and R 5  taken together with the atom to which they are attached form a cyclic structure;  
 R 9  is selected from the group consisting of H, hydrocarbyl, hydroxyalkyl, alkoxyalkyl, aminoalkyl, alkylaminoalkyl, ammoniumalkyl, polyalkoxyalkyl, heterocyclyl, heteroaryl, quaternary heterocycle, quaternary heteroaryl, OR 3 , NR 3 R 4 , N + R 3 R 4 R 5 A − , SR 3 , S(O)R 3 , SO 2 R 3 , SO 3 R 3 , oxo, CO 2 R 3 , CN, halogen, NCO, CONR 3 R 4 , SO 2 OM, SO 2 NR 3 R 4 , PO(OR 23 )OR 24 , P + R 3 R 4 R 5 A − , S + R 3 R 4 A − , and C(O)OM;  
 R 23  and R 24  are independently selected from the substituents constituting R 3  and M;  
 n is a number from 0 to 4;  
 A −  and Z −  independently are pharmaceutically acceptable anions; and  
 M is a pharmaceutically acceptable cation.  
 
     
     
         323 . The method of  claim 322  wherein the tetrahydrobenzothiepine compound has the structure of Formula 64 
       
         
           
           
               
               
           
         
       
     
     
         324 . The method of  claim 323  wherein the tetrahydrobenzothiepine compound has the structure of Formula 41 
       
         
           
           
               
               
           
         
       
     
     
         325 . A method for the preparation of a product crystal form of a tetrahydrobenzothiepine compound having the compound structure of Formula 41 
       
         
           
           
               
               
           
         
       
       wherein the product crystal form has a melting point or a decomposition point of about 278° C. to about 285° C., wherein the method comprises applying heat to an initial crystal form of the tetrahydrobenzothiepine compound wherein the initial crystal form has a melting point or a decomposition point of about 220° C. to about 235° C., thereby forming the product crystal form.  
     
     
         326 . The method of  claim 325  wherein the initial crystal form is heated to a temperature from about 20° C. to about 150° C.  
     
     
         327 . The method of  claim 326  wherein the initial crystal form is heated to a temperature from about 50° C. to about 125° C.  
     
     
         328 . The method of  claim 327  wherein the initial crystal form is heated to a temperature from about 60° C. to about 100° C.  
     
     
         329 . The method of  claim 325  wherein the method further comprises a cooling step after the step in which the initial crystal form is heated.  
     
     
         330 . The method of  claim 325  further comprising mixing the initial crystal form with a solvent.  
     
     
         331 . The method of  claim 330  wherein the solvent comprises a ketone.  
     
     
         332 . The method of  claim 331  wherein the ketone is selected from the group consisting of methyl ethyl ketone, acetone, and methyl isobutyl ketone.  
     
     
         333 . The method of  claim 332  wherein the ketone is methyl ethyl ketone.  
     
     
         334 . The method of  claim 332  wherein the ketone is acetone.  
     
     
         335 . The method of  claim 332  wherein the ketone is methyl isobutyl ketone.  
     
     
         336 . The method of  claim 330  wherein the method further comprises a cooling step after the step in which the initial crystal form is heated.

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