By cyclization of 2-glycylamino-2',5-dichlorobenzenophenone (I) in pyridine to give 7-chloro-5-(o-chlorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one (II), which was refluxed with P2S5 in pyridine yielding 7-chloro-5-(o-chlorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-thione (III). Finally, this product was condensed with acetylhydrazide (A) in butanol.