Palladium(II)/Lewis Acid Synergistically Catalyzed Allylic C–H Olefination

Abstract

The first allylic C-H olefination with α-diazo esters synergistically catalyzed by a palladium(II) complex and (salen)CrCl has been established to directly generate conjugated polyene derivatives in moderate to high yields and with excellent stereoselectivities.