| Abstract: | A highly selective palladium‐catalyzed allenic C−H bond oxidation was developed, and it provides a novel and straightforward synthesis of [3]dendralene derivatives. A variety of [3]dendralenes with diverse substitution patterns are accessible with good efficiency and high stereoselectivity. The reaction tolerates a broad substrate scope containing various functional groups on the allene moiety, including ketone, aldehyde, ester, and phenyl groups. Also, a wide range of olefins with both electron‐donating and electron‐withdrawing aryls, acrylate, sulfone, and phosphonate groups are tolerated. |
