| abstract |
AN IMPROVED PROCESS FOR PREPARING COMPOUNDS OF THE FORMULA 1-X'',2-((=C(-NH-CHO)-Y=CH-Y=CH-)(-R)>C-X-CH2-),R''-BENZENE WHEREIN X IS OXY OR THIO; ONE Y IS AZA; THE REMAINING Y IS -CH= R AND R'' ARE THE SAME OR DIFFERENT AND REPRESENT HYHDROGEN, HALOGEN, LOWER ALKYL, LOWER ALKOXY, TRIFLUROMETHYL, TRIFLUOROMETHYLMERCAPTO, TRIFLUOROMETHYOXY OR N,N''-DIMETHYLAMINOSULFONYL; AND X'' IS CHLORO OR BROMO, IS DISCLOSED. THESE COMPOUNDS ARE USEFUL IN THE PREPARATION OF DIHYDROPYRIDOBENZOXAZEPINES AND DIHYDROPYRIDOBENZOTHIAZEPINES. |