Regio- and Diastereoselective Nickel-Catalyzed Cycloaddition of Activated Cyclopropanes with Allenes

Nickel-catalyzed intermolecular [3+2] cycloaddition of activated cyclopropanes with allenes has been developed. This transformation generates highly substituted five-membered carbocyclic compounds with good regio- and diastereoselectivity under mild reaction conditions. This reaction can be extended to a broad variety of allenes to obtain the corresponding adducts.