2'',5-二氯-2-(3-甲基-4H-1,2,4-三唑-4-基)二苯甲酮 、 聚合甲醛 以
邻二甲苯 为溶剂,
以to give 2',5-dichloro-2-[3-(hydroxymethyl)-5-methyl-4H-1,2,4-triazol-4-yl] benzophenone of melting point 193.5°-195° C.的产率得到2',5-二氯-2-(3-羟基甲基-5-甲基-4H-1,2,4-三唑-4-基)二苯甲酮
A process to make 6-phenyl-4H-s-triazolo[4,3-a][1,4]-benzodiazepines by converting 2-[3-(hydroxymethyl)-4H-1,2,4-triazol-4-yl]benzophenones to 2-[3-[(phthalimido or methanesulfonyl)methyl]-4H-1,2,4-triazol-4-yl]benzophenones and converting these compounds to the highly active 6-phenyl-4H-s-triazolo[4,3-a][1,4]benzodiazepines useful as tranquilizers and sedatives.
Intermediates of the formula IV: ##STR1## wherein R is selected from the group consisting of hydrogen and alkyl of 1 to 3 carbon atoms, inclusive; and wherein R.sub.2, R.sub.3, and R.sub.4 are selected from the group consisting of hydrogen, fluoro, chloro, bromo, nitro, and trifluoromethyl are produced by a multistep synthesis. The final compounds are tranquilizers and sedatives and can be used in mammals, including man, and in birds.