Abstract

In the presence of a palladium catalyst, treatment of γ-acyloxy-α,β-unsaturated ketone with bis(iodozincio)methane caused umpolung of π-allylpalladium to give a zinc dienolate. Thus formed zinc species afforded a cyclohexene derivative via a self-condensation reaction. It is noteworthy that the three adjacent stereogenic centers were created in a single process with quite high diastereoselectivity.

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