title: Palladium-catalyzed addition of alkynes to cyclopropenes: an entry to stereodefined alkynylcyclopropanes.
abstract: The Herrmann-Beller (H-B) phosphapalladacycle catalyzed the addition of terminal alkynes to unsymmetrical gem-disubstituted cyclopropenes to give alkynylcyclopropanes as single diastereomers in good to excellent yields. The stereofacial discrimination at the approach of the bulky alkynylpalladium species is believed responsible for the diastereoselectivity control of the addition reaction.
authors.affiliation: Aix-Marseille Université, ECM-UMR 6263, ISM2, Av. Escadrille Normandie-Niemen, 13397 Marseille cedex 20, France. alphonse.tenaglia@univ-cezanne.fr
authors.forename: Alphonse
authors.initials: A
authors.lastname: Tenaglia
authors.forename: Karel
authors.initials: K
authors.lastname: Le Jeune
authors.forename: Laurent
authors.initials: L
authors.lastname: Giordano
authors.forename: Gérard
authors.initials: G
authors.lastname: Buono