Abstract
AbstractThe preparation of 7,9‐dichloro‐2,5‐bis(trichloromethyl)‐1,3,4,6,9b‐pentaazaphenalene (1e) by the chlorination of 2‐trichloromethyl‐5‐methyl‐1,3,4,6,9b‐pentaazaphenalene (1a) using molecular chlorine is described. Displacement of one or both trichloromethyl groups of 1e by a variety of nucleophiles led to the corresponding 7,9‐dichloro‐2,5‐bis‐substituted or 7,9‐dichloro mixed 2,5‐disubstituted derivatives. The reaction of 1a with N‐chlorosuccinimide proved not to be a useful route to 1e but instead led primarily to substitution of positions 7 and/or 9 by chlorine.
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