Oxidation of 2-Mercaptobenzoheterazoles by Dimethyldioxirane. A New Method for a Synthesis of C-2 Substituted Benzimidazole, Benzoxazole, and Benzothiazole Derivatives

New and efficient reactions in which 2-mercaptobenzoheterazoles are selectively converted by dimethyldioxirane, under mild experimental conditions, to several C-2 substituted benzoimidazole, benzoxazole, and benzothiazole derivatives are reported.