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 is readily performed by extraction with cyclohexane and more importantly, both expensive K₂PtCl₄ and Xphos-SO₃Na in a PEG-400/H₂O system could be easily recycled and reused at least eight times without any loss of catalytic activity.

中文翻译：

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可回收和可重复使用的K ₂ PtCl ₄ / Xphos-SO ₃ Na / PEG-400 / H ₂ O系统，用于末端炔烃的高度区域选择性和立体选择性氢化硅烷化

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。