title: Generation and intermolecular capture of cyclopropylacyl radicals.
abstract: [reaction: see text] Cyclopropylacyl radicals derived from S-cyclopropylacyl xanthates (dithiocarbonates) undergo intermolecular additions to olefins without loss of CO or ring opening. In the presence of a phenyl ring on carbon C-1 of the cyclopropane ring, loss can be made to occur in the absence of an olefinic trap. The adducts from the cyclopropylacyl radical additions are easily converted into enones by base-induced beta-elimination of the xanthate group.
authors.affiliation: Laboratoire de Synthèse Organique associé au CNRS, Ecole Polytechnique, 91128 Palaiseau Cedex, France.
authors.forename: Markus R
authors.initials: MR
authors.lastname: Heinrich
authors.forename: Samir Z
authors.initials: SZ
authors.lastname: Zard