Phenyl‐Substituted Dimethyleneammonium Salts: 2‐Aza‐allenium Derivatives

Abstract

A general route to the synthetically valuable CNC compounds (1), starts with the reaction of the substituted diamines (2) with acylium salts such as CH3CO+SbCl. The salts (1) take up nucleophiles and react as ene-components in cycloaddition reactions.