SIOC English
化学学报
高级检索

化学学报 ›› 2006, Vol. 64 ›› Issue (16): 1749-1751. 上一篇    下一篇

研究简报

Pd(OAc)2/Cu(OTf)2在离子液体BMImPF6中催化苯乙烯二聚反应的研究

彭家建, 厉嘉云, 邱化玉, 蒋剑雄, 蒋可志, 来国桥*   

  1. (杭州师范学院有机硅化学及材料技术教育部重点实验室 杭州 310012)
  • 投稿日期:2005-12-22 修回日期:2006-03-20 发布日期:2006-08-28
  • 通讯作者: 来国桥

Study on the Dimerization of Styrene Catalyzed with Pd(OAc)2/Cu(OTf)2 System in Ionic Liquid BMImPF6

PENG Jia-Jian; LI Jia-Yun; QIU Hua-Yu; JIANG Jian-Xiong; JIANG Ke-Zhi; LAI Guo-Qiao*   

  1. (Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Teachers College, Hangzhou 310012)
  • Received:2005-12-22 Revised:2006-03-20 Published:2006-08-28
  • Contact: LAI Guo-Qiao

PDF

915

在离子液体BMImPF6中, 用不同的钯催化剂和Lewis酸三氟甲磺酸铜Cu(OTf)2共催化苯乙烯二聚反应, 发现用Pd(OAc)2/Cu(OTf)2作催化剂, Pd/Cu物质的量之比为1～4时, 可高产率高选择性地获得苯乙烯二聚产物1,3-二苯基-1-丁烯. BMImPF6对催化剂有较好的溶解性, 可固定催化剂体系, 使催化剂有效地与产品分离. 同时, α-甲基苯乙烯的二聚反应表明, 室温下不发生反应, 提高温度有利于反应进行.

关键词: 苯乙烯二聚, 室温离子液体, Pd(OAc)2/Cu(OTf)2催化剂

Dimerization of styrene was co-catalyzed with the different palladium complexes and Cu(OTf)2 in ionic liquid BMImPF6, in which Pd(OAc)2/Cu(OTf)2 was found the best catalyst system. When molar ratio of Pd(OAc)2/Cu(OTf)2 was 1/1～4/1, both high catalytic activity and selectivity were obtained. The Pd(OAc)2/Cu(OTf)2 catalyst system has excellent solubility in ionic liquid BMImPF6, and can be easily separated from the product. The results of dimeri-zation of α-methylstyrene indicate that no products were detected at room temperature and it is bene-fieial to the reaction to raise temperature.

Key words: dimerization of styrene, room temperature ionic liquid, Pd(OAc)2/Cu(OTf)2 catalyst