【摘要】 研究了在室温离子液体以及室温离子液体/有机溶剂复合介质体系中,Rh（PPh₃）₃Cl,Ru（PPh₃）₃Cl₂等催化烯烃与三乙氧基硅烷的硅氢加成反应.实验结果表明,在乙二醇二甲醚/离子液体1-丁基-3-甲基咪唑六氟磷酸盐（BMImBF₆）（V/V =1/4）介质中,于90℃下,己烯与三乙氧基硅烷反应的转化率为100%,β加成物的选择性可达89.0%,而用Rh（PPh₃）₃Cl作为反应的催化剂,在纯离子液体BMImPF₆中,就可以高效催化烯烃与三乙氧基氢硅烷的加成反应,过渡金属Rh（PPh₃）₃Cl,Ru（PPh₃）₃Cl₂催化剂/离子液体BMImPF₆催化体系,不仅解决了产物与催化剂分离困难这一难题,同时,离子液体BMImPF₆的存在提高了过渡金属Rh（PPh₃）₃Cl,Ru（PPh₃）₃Cl₂催化硅氢加成反应的活性,特别是β加成物的选择性。反应结束后,催化剂/离子液体与产物易于分离,并且可以重复使用。更多还原

【Abstract】 Alkene hydrosilylation catalyzed by Ru（PPh₃）₃Cl₂ in ionic liquids/organic solvents and Rh（PPh₃）3Cl in ionic liquids was studied in this paper.Both catalytic activity and selectivity of Ru（PPh₃）₃Cl₂ were improved in ionic liquid BMImPF₆/DME medium.The conversion of hexene and selectivity ofβ-adduct for the hydrosilylation reaction of 1-hexene with triethoxysilane catalyzed by Ru（PPh₃）₃Cl₂ in ionic liquid BMImPF₆DME （V/V=1/4） medium at 90℃were 100% and 89.0%,respectively.While the conver- sion of bexene and selectivity toβ-adduct catalyzed by Rh（PPh₃）₃Cl in sole BMImPF₆ at 90℃were 100% and 99.9%,respectively.The Rh（PPh₃）₃Cl in BMImPF₆ catalyst system could be recovered easily and be re- used more than three times without noticeable loss of its catalytic activity and selectivity.更多还原