title: Geometrically selective synthesis of functionalized beta,beta-disubstituted vinylic sulfoxides by Cu-catalyzed conjugate addition of organozinc reagents to 1-alkynyl sulfoxides.
abstract: [reaction: see text] A new synthetic method of chiral beta,beta-disubstituted vinylic sulfoxides bearing various functionalities has been developed by employing Cu-catalyzed conjugate addition of an organozinc reagent to chiral 1-alkynyl sulfoxide. Since the reaction proceeds with very high syn-selectivity, both geometric beta,beta-disubstituted vinylic sulfoxides were stereoselectively synthesized by changing the combination of 1-alkynyl sulfoxide and the organozinc reagent.
authors.affiliation: Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan.
authors.forename: Naoyoshi
authors.initials: N
authors.lastname: Maezaki
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Sawamoto
authors.forename: Ryoko
authors.initials: R
authors.lastname: Yoshigami
authors.forename: Tomoko
authors.initials: T
authors.lastname: Suzuki
authors.forename: Tetsuaki
authors.initials: T
authors.lastname: Tanaka