Pd(II)-Catalyzed Pyridine <i>N</i>-Oxides Directed Arylation of Unactivated C_sp^₃–H Bonds

Abstract

A novel Pd(II)-catalyzed pyridine N-oxide directed remote arylation of unactivated Csp(3)-H bonds in aliphatic amides with aryl iodides has been developed. This protocol allows installing various aryl groups at the β- or γ-Csp(3) atom of alkyl carboxylic acid amides. The key palladabicyclic intermediate of this transformation has been identified by HR-MS and (1)H NMR method.