Nickel-Catalyzed Coupling of Alkyne-Tethered Vinylcyclopropanes and Allyl Chloride
2008
A nickel-catalyzed coupling of the alkyne-tethered vinylcyclopropanes 1 (VCPs) with the allyl chloride 2 has been developed: the reaction proceeds via the addition of (π-allyl)nickel species to the alkyne moiety, the incorporation of the pendant VCP, and then β-syn elimination of the cyclopropyl carbon−carbon bond, to stereoselectively give 3 with an (E)-1,3-diene.
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