Methods for making 3-o-protected morphinones and 3-o-protected morphinone dienol carboxylates

Abstract

Disclosed are methods for making aldehydes and ketones comprising allowing the corresponding primary or secondary alcohol to react in the presence of trichoroisocyanuric acid, a compound of formula R 1 SR 2 and a base. In one embodiment, the alcohol is a compound of formula (I): wherein R 3 is a protecting group. Also disclosed are methods for making 3-O-protected morphine dienol carboxylates comprising allowing a compound of formula (I) to oxidize in the presence of a chlorine-containing compound and a compound of formula R 1 SR 2 ; and allowing the product of the oxidation step to react with an acylating agent

What is claimed is: 
     
         1 . A method for making an aldehyde, comprising allowing a primary alcohol to react in the presence of a compound of formula R 1 SR 2 , trichloroisocyanuric acid, and a base under conditions sufficient to make the aldehyde, wherein R 1  and R 2  are each independently —(C 1 -C 20 )alkyl, —(C 3 -C 8 )cycloalkyl, or -phenyl. 
     
     
         2 . The method of  claim 1 , wherein the amount of base ranges from about 1.0 to about 15.0, from about 2.0 to about 10.0, or from about 2.5 to about 7.0 molar equivalents per molar equivalent of trichloroisocyanuric acid. 
     
     
         3 . The method of  claim 1 , wherein the base is selected from triethylamine, diisopropylethylamine, pyridine, dimethylpyridine, dimethylaminopyridine, and any mixture thereof. 
     
     
         4 . The method of  claim 3 , wherein the base is triethylamine. 
     
     
         5 . The method of  claim 3 , wherein the amount of base ranges from about 1.0 to about 15.0, from about 2.0 to about 10.0, or from about 2.5 to about 7.0 molar equivalents per molar equivalent of trichloroisocyanuric acid. 
     
     
         6 . The method of  claim 1 , wherein R 1  is —CH 3  and R 2  is —(C 1 -C 20 )alkyl. 
     
     
         7 . The method of  claim 6 , wherein R 1  is —CH 3  and R 2  is —(C 12 )alkyl. 
     
     
         8 . The method of  claim 7 , wherein the amount of base ranges from about 1.0 to about 15.0, from about 2.0 to about 10.0, or from about 2.5 to about 7.0 molar equivalents per molar equivalent of trichloroisocyanuric acid. 
     
     
         9 . The method of  claim 7 , wherein the base is selected from triethylamine, diisopropylethylamine, pyridine, dimethylpyridine, dimethylaminopyridine, and any mixture thereof. 
     
     
         10 . The method of  claim 9 , wherein the base is triethylamine. 
     
     
         11 . The method of  claim 9 , wherein the amount of base ranges from about 1.0 to about 15.0, from about 2.0 to about 10.0, or from about 2.5 to about 7.0 molar equivalents per molar equivalent of trichloroisocyanuric acid. 
     
     
         12 . The method of  claim 7 , wherein the amount of the compound of formula R 1 SR 2  ranges from about 1.0 to about 9.0, from about 2.0 to about 5.0, or from about 2.5 to about 3.5 molar equivalents per molar equivalent of trichloroisocyanuric acid. 
     
     
         13 . The method of  claim 12 , wherein the amount of base ranges from about 1.0 to about 15.0, from about 2.0 to about 10.0, or from about 2.5 to about 7.0 molar equivalents per molar equivalent of trichloroisocyanuric acid. 
     
     
         14 . The method of  claim 12 , wherein the base is selected from triethylamine, diisopropylethylamine, pyridine, dimethylpyridine, dimethylaminopyridine, and any mixture thereof. 
     
     
         15 . The method of  claim 14 , wherein the base is triethylamine. 
     
     
         16 . The method of  claim 14 , wherein the amount of base ranges from about 1.0 to about 15.0, from about 2.0 to about 10.0, or from about 2.5 to about 7.0 molar equivalents per molar equivalent of trichloroisocyanuric acid. 
     
     
         17 . The method of  claim 1 , wherein the amount of the compound of formula R 1 SR 2  ranges from about 1.0 to about 9.0, from about 2.0 to about 5.0, or from about 2.5 to about 3.5 molar equivalents per molar equivalent of trichloroisocyanuric acid. 
     
     
         18 . The method of  claim 17 , wherein the amount of base ranges from about 1.0 to about 15.0, from about 2.0 to about 10.0, or from about 2.5 to about 7.0 molar equivalents per molar equivalent of trichloroisocyanuric acid. 
     
     
         19 . The method of  claim 17 , wherein the base is selected from triethylamine, diisopropylethylamine, pyridine, dimethylpyridine, dimethylaminopyridine, and any mixture thereof. 
     
     
         20 . The method of  claim 19 , wherein the base is triethylamine. 
     
     
         21 . The method of  claim 19 , wherein the amount of base ranges from about 1.0 to about 15.0, from about 2.0 to about 10.0, or from about 2.5 to about 7.0 molar equivalents per molar equivalent of trichloroisocyanuric acid. 
     
     
         22 . The method of  claim 1 , wherein the primary alcohol is a straight-chain alkyl primary alcohol, a straight-chain alkenyl primary alcohol, a straight-chain alkynyl primary alcohol, a branch-chain alkyl primary alcohol, a branch-chain alkenyl primary alcohol, or a branch-chain alkynyl primary alcohol. 
     
     
         23 . The method of  claim 1 , wherein the primary alcohol is methanol, ethanol, n-propanol, n-butanol, 2-methylpropanol, n-pentanol, 2-methylbutanol, 3-methylbutanol, n-hexanol, 2-methylpentanol, 3-methylpentanol, 4-methylpentanol, 2,2-dimethylbutanol, 2,3-dimethylbutanol, 3,3-dimethylbutanol, 2-ethylbutanol, n-heptanol, n-octanol, n-nonanol, or n-decanol. 
     
     
         24 . The method of  claim 1 , wherein the amount of primary alcohol ranges from about 1.0 to about 9.0, from about 2.0 to about 5.0, or from about 2.0 to about 4.0 molar equivalents per molar equivalent of trichloroisocyanuric acid. 
     
     
         25 . The method of  claim 1 , wherein the reacting occurs in a solvent selected from aromatic hydrocarbons, (C 1 -C 4 )halogenated hydrocarbons, ethers, glymes, ethyl acetate, and any mixture thereof. 
     
     
         26 . The method of  claim 25 , wherein the solvent is selected from benzene, toluene, xylene, mesitylene, chlorobenzene, dichloromethane, chloroform, carbon tetrachloride, dichloroethane, diethyl ether, dipropyl ether, di-butyl ether, methyl-tert-butyl ether, tetrahydrofuran, ethylene glycol dimethyl ether, ethyl acetate, and any mixture thereof. 
     
     
         27 . The method of  claim 25 , wherein the solvent comprises toluene, dichloromethane, or any mixture thereof.