Fused‐<i>s</i>‐triazino heterocycles <b>IX</b>. 1,3,4,6,9b‐pentaazaphenalenes and 1,3,6,9b‐tetraazaphenalenes: Amino and alkoxy derivatives

Abstract

Abstract The trichloromethyl group served as a useful leaving group in nucleophilic displacement reactions by a variety of substituted amines and alcohols (the latter under base catalysis) on 2‐trichloromethyl‐5‐methyl‐1,3,4,6,9b‐pentaazaphenalene ( 1a ) and 2‐trichloromethyl‐4‐cyano‐1,3,6,9b‐tetraazaphenalene ( 2a ). The reaction conditions were mild and the yields of the corresponding 2‐substituted amino and alkoxy derivatives were generally good.