Compounds of the formula: <IMAGE> III wherein R'o and R''o are hydrogen or alkyl of 1 to 3 carbon atoms, inclusive; R1 is hydrogen, fluoro, chloro, bromo, nitro, trifluoromethyl, or alkylthio in which the alkyl moiety is of 1 to 3 carbon atoms, inclusive; R2 is phenyl, o-chlorophenyl, o-fluorophenyl, 2,6-difluorophenyl and 2-pyridyl are prepared by multistep reactions from compounds of formula I: <IMAGE>I wherein R1 and R2 are defined as above and X is chlorine or bromine.
Novel derivatives of 4H-s-triazolo{8 4,3-{60 {9 {8 1,4{9 benzodiazepines