Synthesis of 1-Substituted Benzimidazoles Using N,N'-Thionyldibenzimidazole or N-Chlorosulfinylbenzimidazole

Abstract

N,N'-Thionyldiimidazole has been known as an imidazole transfer reagent^2–4 and form a new class of compound with a wide range of synthetic application. Continuing our studies on the imidazole transfer reaction, we succeeded with the benzimidazole transfer reaction using N,N'-thionyldibenzimidazole. The present communication deals with a new procedure providing 1-substituted benzimidazoles.