title: Highly (Z)-selective hydrosilylation of terminal alkynes catalyzed by a diphosphinidenecyclobutene-coordinated ruthenium complex: application to the synthesis of (Z,Z)-bis(2-bromoethenyl)arenes.
abstract: [reaction: see text] Complex 1 bearing a diphosphinidenecyclobutene ligand (DPCB-OMe) catalyzes highly stereoselective hydrosilylation of diethynylarenes with HSiMe2Ph to afford (Z,Z)-bis(2-silylethenyl)arenes. Treatment of the hydrosilylation products with N-bromosuccinimide causes bromodesilylation in a stereospecific manner, giving (Z,Z)-bis(2-bromoethenyl)arenes in high geometrical purity (>98%).
authors.affiliation: International Research Center for Elements Science, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
authors.forename: Masato
authors.initials: M
authors.lastname: Nagao
authors.forename: Kimihiro
authors.initials: K
authors.lastname: Asano
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Umeda
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Katayama
authors.forename: Fumiyuki
authors.initials: F
authors.lastname: Ozawa