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离子液体对Rh(PPh_3)_3Cl催化烯烃硅氢加成反应的影响 被引量：1

Hydrosilylation of alkenes catalyzed by Rh(PPh_3)_3Cl in ionic liquids:influence of medium on addition reaction
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摘要 对二烷基咪唑类离子液体作为烯烃与三乙氧基氢硅烷硅氢加成反应的介质进行了研究。研究发现,二烷基咪唑类离子液体组成的阴、阳离子不同对烯烃与三乙氧基氢硅烷的反应有一定影响。离子液体为二烷基咪唑六氟磷酸盐时,咪唑环上取代烷基链长的增加,苯乙烯和三乙氧基氢硅烷加成反应中β加成物/α加成物的比值也随之增加。同时,二烷基咪唑类离子液体的阴离子性质也直接影响了硅氢加成反应的发生。以[Bmim]PF6作为反应溶剂,反应完成后,离子液体催化剂体系可以比较容易地与产物分离,并可以重复使用。 It has been found that both conversion and selectivity could be improved by using ionic liquid as the medium for hydrosilylation of alkenes with triethoxysilane catalyzed by Rh（PPh3）3Cl, and increased with an increasing length of alkyl substituent on 1-alkyl-3-methylimidazolium cations. The catalytic activities of ionic liquids were anion dependent. In addition, the Rh（PPh3）3Cl-ionic liquid system can be easily separated from the product and can be recycled.
作者 厉嘉云 彭家建 胡应乾 白赢 邱化玉 来国桥
机构地区 杭州师范大学有机硅化学及材料技术教育部重点实验室
出处 《化学试剂》 CAS CSCD 北大核心 2009年第7期535-537,550,共4页 Chemical Reagents
基金 浙江省钱江学者特聘教授基金(ZJ0508) 浙江省钱江人才计划(2006R10008) 浙江省教育厅科研(20070466)资助项目
关键词 硅氢加成 离子液体 Rh(PPh3)3Cl 催化剂 hydrosilylation ionic liquid Rh（PPh3）3Cl catalyst
分类号 TQ426.98 [化学工程]
  • 相关文献

参考文献10

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化学试剂
2009年 第7期

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