ChemInform Abstract: KF/Al2O3: An Efficient Solid Heterogeneous Base Catalyst in One‐Pot Synthesis of Benzimidazoles and Bis‐Benzimidazoles at Room Temperature

Abstract

KF/Al2O3 is an efficient solid heterogeneous base catalyst in the one-pot synthesis of 2-substituted benzimidazoles and 2,2′-disubstituted bis-benzimidazoles from 1,2-phenylenediamines or 3,3′-diaminobenzidines and acid chlorides, anhydrides, and esters at room temperature.