Process for preparing a 7-chloro-5-(2-chlorophenyl)-benzodiazepinone

摘要

A process for preparing 7-chloro-5-(2-chlorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one of the formula: <IMAGE> utilizing 2',5-dichloro-2-aminobenzophenone, phthalimidoglycine and hydrazine in a single passage and in a single reaction medium under critical reaction conditions.