Facile synthesis of 2,2′-dinitrosubstituted biaryls through Cu-catalyzed ligand-free decarboxylative homocoupling of ortho-nitrobenzoic acids

Abstract

A novel waste-free Cu-catalyzed decarboxylative homocoupling of <italic>ortho</italic>-nitrobenzoic acids with different substituents on the phenyl core has been developed.