Bis(aminostyryl)naphthalene compound, synthesis intermediate thereof, and process for production thereof

Abstract

A bis(aminostyryl)naphthalene compound represented by the general formula [I] or the like below. (where R 2 and R 3 each denotes an unsubstituted aryl group; R 1 and R 4 each denotes an aryl group having a specific substituent such as methoxy group; and R 5 and R 6 each denotes a cyano group or the like.) A process for producing a bis(aminostyryl)naphthalene compound represented by the general formula [I] by condensation of, for example, 4-(N,N-diarylamino)benzaldehyde with diphosphonic ester or diphosphonium. The bis(aminostyryl)naphthalene compound emits intense yellow or red light. The process permits efficient production of the bis(aminostyryl)naphthalene compound.

1 - 39 . (Canceled).  
     
     
         40 . A process for preparing compounds of formula (45):  
       
         
           
           
               
               
           
         
       
       the process comprising reacting a compound of formula (ix)  
       
         
           
           
               
               
           
         
       
       with compounds selected from the group consisting of P(OR 72 ) 3  and P(OR 73 ) 3 , wherein R 72  and R 73  are identical or different, each denoting a hydrocarbon group.  
     
     
         41 - 42 . (Canceled).  
     
     
         43 . A process for preparing compounds of formula (46):  
       
         
           
           
               
               
           
         
       
       the process comprising reacting a compound of formula (ix)  
       
         
           
           
               
               
           
         
       
       with PPh 3 .