Palladium‐Catalyzed Regioselective C‐2 Arylation of Benzofurans with <i>N′</i>‐Acyl Arylhydrazines

Abstract

A novel ligand‐free palladium‐catalyzed C‐2 arylation of benzofurans has been developed using N′ ‐acyl arylhydrazines as the coupling partners and TEMPO as an oxidant. This protocol features a wide functional‐group tolerance and highly regioselective products with good to excellent yields.