Abstract

An efficient synthesis of tetrasubstituted olefins was achieved via a palladium-catalyzed, che- lation-assisted oxidative Heck arylation protocol from trisubstituted olefins bearing a tether with a di- recting group in a completely stereo- and regiose- lective manner. The stereo- and regioselectivity as well as excellent yields of tetrasubstituted olefins originated from the stabilization of a palladium in- termediate by chelation between the palladium center and a directing group.

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