Heterocyclic variants of the 1,5‐benzodiazepine system. V. Derivatives of 2‐(ortho‐R1‐anilino)‐4‐(p‐R2‐phenyl)‐3H‐1,5‐benzodiazepines

Abstract
Mono‐N‐methylation of 2‐(ortho‐R1‐anilino)‐4‐(p‐R2‐phenyl)‐3H‐1,5‐benzodiazepines IV is achieved in moderate yield with sodium hydride in methyl iodide. Reaction of the N‐methyl derivatives I with methoxyacetyl chloride gave the compounds II and III. The structure of all products was confirmed by ir, 1H‐nmr and mass spectrometry.