A recyclable and reusable K2PtCl4/Xphos-SO3Na/PEG-400/H2O system for highly regio- and stereo-selective hydrosilylation of terminal alkynes

作者：Xu, Caifeng; Huang, Bin; Yan, Tao; Cai, Mingzhong^*

来源：Green Chemistry, 2018, 20(2): 391-397.

DOI：10.1039/c7gc02823g

• CROSS-COUPLING REACTIONS
• N-HETEROCYCLIC CARBENE
• MIZOROKI-HECK REACTION
• PLATINUM-CATALYZED HYDROSILYLATION
• TEMPERATURE IONIC LIQUIDS
• POLY(ETHYLENE GLYCOL)
• ORGANIC-SYNTHESIS
• SELECTIVE HYDROSILYLATION
• ROOM-TEMPERATURE
• SOLVENT MEDIUM

K2PtCl4/Xphos-SO3Na in a mixture of poly(ethylene glycol) (PEG-400) and water is shown to be a highly regio- and stereo-selective catalyst for the hydrosilylation of terminal alkynes with hydrosilanes. The reaction could be conducted under mild conditions, yielding a variety of functionalized beta-(E)-vinylsilanes in good to excellent yields with a total beta-(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.

• 出版日期2018-1-21
• 单位江西师范大学