A novel pyrrolidinium ionic liquid with 1,1,2,2-tetrafluoro-2-(1,1,2,2-tetrafluoroethoxy)ethanesulfonate anion as a recyclable reaction medium and efficient catalyst for Friedel–Crafts alkylations of indoles with nitroalkenes
作者:Jin-Hong Lin、Cheng-Pan Zhang、Zhi-Qiang Zhu、Qing-Yun Chen、Ji-Chang Xiao
DOI:10.1016/j.jfluchem.2009.01.004
日期:2009.4
pyrrolidinium 1,1,2,2-tetrafluoro-2-(1,1,2,2-tetrafluoroethoxy)ethanesulfonate ([C4H8NH2][H(CF2)4O(CF2)2SO3]) is highly fluid even below room temperature. It can be used both as a recyclable solvent and as an efficient catalyst for Friedel–Crafts alkylations of indoles with nitroalkenes.
合成了一系列带有新的含氟阴离子的吡咯烷鎓盐。通过改变阴离子的氟代烷基链的长度可以获得不同的熔点。1,1,2,2-四氟-2-(1,1,2,2-四氟乙氧基)乙磺酸吡咯烷鎓盐([C 4 H 8 NH 2 ] [H(CF 2)4 O(CF 2)2 SO 3 ])即使在室温以下也具有很高的流动性。它既可以用作可循环利用的溶剂,又可以用作吲哚与硝基烯烃的弗瑞德-克拉夫茨烷基化反应的有效催化剂。