2,4,6‐Trimethoxypyridine is identified as an efficient ligand for promoting a Pd‐catalyzed ortho‐CHamination of both benzamides and triflyl‐protected benzylamines. This finding provides guidance for the development of ligands that can improve or enable PdII‐catalyzed CH activation reactions directed by weakly coordinating functional groups.
The Rupp-catalyzed ortho-C-H amination directed by a weakly coordinating amide auxiliary with O-benzoyl hydroxylamines at room temperature has been achieved. This reaction is compatible with heterocycles including pyrazole, thiophene, benzothiophene, furan, benzofuran, and indole.