A Novel Gateway to InCl₃ catalyzed N‐Formylation of Amines: An Access to 2‐unsubstituted, N‐unsubstituted Benzimidazoles

Abstract

This article deals with a simple indium(III) chloride catalysed procedure in acetonitrile under mild condition for N-formylation for a wide variety of amines. The reaction condition was extended to the chemoselective N-formylation of amino groups as well. Using o-phenylenediamines in place of mono-amines, unsubstituted 1H-benzimidazoles could also be accessed.