Process for preparing 6-aryl-4H-S-triazolo[3,4-c]-thieno[2,3-e]-1,4-diazepines

Abstract

An improved process for preparing 6-aryl-4H-s-triazolo[3,4-c]-thieno[2,3-e]-1,4-diazepines of formula I, wherein: R 1 is a hydrogen or halogen atom or a C 1 -C 6 alkyl group, R 2 is a hydrogen or halogen atom or a C 1 -C 6 alkyl, C 1 -C 6 hydroxyalkyl, C 3 -C 6 cycloalkyl group or a 5- or 6-membered oxygen-, sulphur- or nitrogen-containing heterocyclic group which may optionally be substituted at the nitrogen atom by a C 1 -C 3 alkyl group, and R 3 is a hydrogen or halogen atom,

1 - 9 . (canceled)  
     
     
         10 . A 5-aryl-2-chlorothieno[2,3-e]-1,4-diazepine of the formula IlI  
       
         
           
           
               
               
           
         
       
       wherein: 
 R 1  is a hydrogen or halogen atom or a C 1 -C 6  alkyl group, and  
 R 3  is a hydrogen or halogen atom.  
 
     
     
         11 . The process according to  claim 10 , wherein R 1  denotes a bromine atom and R 3  denotes a chlorine atom.