title: Platinum-catalyzed one-pot alkenylation of aldehydes using alkynes and triethylsilane: dual catalysis by platinum(II) chloride.
abstract: The PtCl2-catalyzed hydrosilylation of terminal alkynes with triethylsilane and subsequent alkenylation of aldehydes with the resultant (E)-alkenylsilanes in a one-pot manner are described. By adding p-benzoquinone and LiI, the latter alkenylation step proceeds smoothly to give allyl silyl ethers in moderate to high yields. This one-pot alkenylation is tolerant to a reasonable range of functional groups. PtCl2 plays a dual role as hydrosilylation and alkenylation catalysts.
authors.affiliation: Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University , Sakura-ku, Saitama 338-8570, Japan.
authors.forename: Hidenori
authors.initials: H
authors.lastname: Kinoshita
authors.forename: Ryousuke
authors.initials: R
authors.lastname: Uemura
authors.forename: Daiki
authors.initials: D
authors.lastname: Fukuda
authors.forename: Katsukiyo
authors.initials: K
authors.lastname: Miura