Green synthesis of liquid crystal intermediates the preparation of phenylacetylenes in ionic liquids

摘要：

Sonogashira coupling of phenylacetylenes with phenyl iodides in l-butyl-3-methyl imidazolium bromide (BMImBr) was explored. Using CuI/Pd(PPh3)4 as a catalyst and Im as the base, the expected substituted acetylenes were obtained with good to excellent yields (61％-95％) under mild conditions (4h, 60℃). After the product was isolated, the left ionic liquid can been readily recovered and reused in the subsquent runs with almost the same efficiency. The reactivity of different iodoarenes with terminal alkynes was also discussed.

关键词： lonic liquids Sonogashira reaction Phenyl iodides Phenylacetylenes

作者: Bao-You Liu Hui-Long Yang Yi-Ping Wang Yuan-Yuan Wang Zhi-Jie Wu Fu-Xiang Wei

作者单位: College of Environmental Science and Engineering, Hebei University of Science and Technology,Shijiaz Department of General Service, Hebei University of Science and Technology,Shijiazhuang 050018, China College of Material Materials Science & Engineering, Hebei University of Science and Technology,Shij College of Environmental Science and Engineering, Hebei University of Science and chnology,Shijiazhu

会议类型: 国际会议

会议名称: 2009 International Symposium on Liquid Crystal Science and Technology(2009国际液晶科技研讨会)

会议地点: 昆明

会议语种:英文

页码: 46-51

在线出版日期: 2009-08-02（万方平台首次上网日期，不代表论文的发表时间）