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Palladium-Catalyzed Oxidative Arylating Carbocyclization of Allenynes


  • Financial support from the European Research Council (ERC AdG 247014), the Swedish Research Council, and the Berzelii Centre EXSELENT is gratefully acknowledged.


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Vinylallenes or cross-conjugated trienes are obtained selectively in the title reaction (see scheme). Two possible mechanisms are suggested to rationalize the formation of the different types of products. Control experiments indicate that p-benzoquinone (BQ) plays an important role as a ligand in addition to its role as an oxidant. E=CO2Me.