Cobalt-Catalyzed Ortho-Arylation of Aromatic Imines with Aryl Chlorides

An ortho-arylation reaction of aromatic imines with aryl chlorides has been achieved using a cobalt N-heterocyclic carbene catalyst in combination with a neopentyl Grignard reagent. The reaction takes place at room temperature to afford biaryl products in moderate to good yields.