Pd(OAc)_2/Cu(OTf)_2在离子液体BMImPF_6中催化苯乙烯二聚反应的研究  

Study on the Dimerization of Styrene Catalyzed with Pd(OAc)_2/Cu(OTf)_2 System in Ionic Liquid BMImPF_6

作　　者：彭家建[1] 厉嘉云[1] 邱化玉[1] 蒋剑雄[1] 蒋可志[1] 来国桥[1] 

机构地区：[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

出　　处：《化学学报》2006年第16期1749-1751,共3页Acta Chimica Sinica

摘　　要：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.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 dimerization of a-methylstyrene indicate that no products were detected at room temperature and it is benefieial to the reaction to raise temperature.

关 键 词：苯乙烯二聚 室温离子液体 Pd(OAc)2/Cu(OTf)2催化剂 

分 类 号：O643.32[理学—物理化学]