A recyclable and reusable K<sub>2</sub>PtCl<sub>4</sub>/Xphos-SO<sub>3</sub>Na/PEG-400/H<sub>2</sub>O system for highly regio- and stereoselective hydrosilylation of terminal alkynes
作者:Caifeng Xu、Bin Huang、Tao Yan、Mingzhong Cai
DOI:10.1039/c7gc02823g
日期:——
K2PtCl4/Xphos-SO3Na in a mixture of poly(ethylene glycol) (PEG-400) and water is shown to be a highly regio- and stereoselective catalyst for the hydrosilylation of terminal alkynes with hydrosilanes. The reaction could be conducted under mild conditions, yielding a variety of functionalized β-(E)-vinylsilanes in good to excellent yields with a total β-(E)-selectivity. The isolation of the products
在聚(乙二醇)(PEG-400)和水的混合物中,K 2 PtCl 4 / Xphos-SO 3 Na被证明是高度炔和立体选择性的催化剂,用于末端炔烃与氢硅烷的硅氢化反应。该反应可以在温和的条件下进行,以良好的至优异的产率产生各种官能化的β-(E)-乙烯基硅烷,并具有总的β-(E)-选择性。产物的分离很容易通过环己烷萃取,更重要的是,在PEG-400 / H 2中用昂贵的K 2 PtCl 4和Xphos-SO 3 Na萃取。O系统可以轻松回收再利用至少八次,而不会损失任何催化活性。