Intermediates in aromatic nucleophilic substitution reactions: Meisenheimer complexes from 1-chloro-2,6-dinitro-4-X-benzenes
Abstract
The coloured intermediates initially produced on the addition of sodium methoxide to 1-chloro-2,6-dinitro-4-X-benzenes in dimethyl sulphoxide are shown to result from base addition at a ring carbon carrying hydrogen rather than at the chloro-substituted position.