ChemInform Abstract: 1‐Oxotetrahydro‐2‐benzazepines from 1‐Methyl‐3,4‐dihydro‐5H‐2‐benzazepines: Synthesis of N‐Methyl‐7,8,9‐trimethoxy‐2,3,4,5‐tetrahydro‐1H‐2benzazepine.

Abstract Reaction of 3,4,5‐trimethoxybenzaldehyde (I) with acetonitrile (II) in the presence of a base yields a mixture of the isomeric trimethoxycinnamonitriles (III).