title: Catalytic tandem C-C bond formation/cleavage of cyclopropene for allylzincation of aldehydes or aldimine using organozinc reagents.
abstract: The tandem allylation of aldehydes or an aldimine with allylzinc intermediates derived from organozinc reagents and cyclopropenes is described. The present three-component reaction involves carbozincation of cyclopropene and sequential cleavage of a cyclopropylzinc intermediate in situ without a transition-metal catalyst. The allylzinc intermediates generated in situ, which is an α,β-unsaturated acylanion equivalent, gave the corresponding homoallylic alcohols or amine in good yields.
authors.affiliation: Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University , Kakuma, Kanazawa 920-1192, Japan.
authors.forename: Takeo
authors.initials: T
authors.lastname: Nakano
authors.forename: Kohei
authors.initials: K
authors.lastname: Endo
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Ukaji