Nucleophilic substitution reactions of 2-chlorobenzimidazoles. Part III. Preparation of 2-alkoxybenzimidazoles from 2-chloro-1-isopropenylbenzimidazole
Abstract
The reaction of sodium alkoxides with 2-chloro-1-isopropenylbenzimidazole yields 2-alkoxy-1-isopropenyl-benzimidazoles, which may be oxidised by potassium permanganate in alkaline solution to give 2-alkoxybenzimidazoles unsubstituted in the 1-position.