title: Copper-catalyzed α-selective hydrostannylation of alkynes for the synthesis of branched alkenylstannanes.
abstract: A variety of branched alkenylstannanes can directly be synthesized with excellent α-selectivity by the copper-catalyzed hydrostannylation using a distannane or a silylstannane, irrespective of the electronic and steric characteristics of terminal alkynes employed. Synthetic utility of the resulting branched alkenylstannane has been demonstrated by the total synthesis of bexarotene.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan. yhiroto@hiroshima-u.ac.jp.
authors.forename: H
authors.initials: H
authors.lastname: Yoshida
authors.forename: A
authors.initials: A
authors.lastname: Shinke
authors.forename: Y
authors.initials: Y
authors.lastname: Kawano
authors.forename: K
authors.initials: K
authors.lastname: Takaki