Ortho‐C−H Methylation and Ipso‐C−O Alkenylation of Aryl Triflates via Catellani Strategy

Abstract The ortho C−H methylation and ipso C−O alkenylation of aryl triflates was regio‐selectively achieved in one pot by palladium/norbornene (NBE) synergistic catalysis. This work provides an efficient method for preparing poly‐substituted aromatics with (deuterated) methyl and alkenyl groups from the readily available phenoxides.