Chloroaluminate ionic liquid bound on magnetic nanoparticles (Fe3O4@O2Si[PrMIM]Cl·AlCl3) was prepared and used as a heterogenous Lewis acidic catalyst for the Friedel–Crafts sulfonylation of aromatic compounds with sulfonyl chlorides or p-toluenesulfonic anhydride. The catalyst’s stability, efficiency, easy recovery, and high recyclability without considerable loss of catalytic capability after four recycles
制备了结合在磁性纳米颗粒上的
氯铝酸盐
离子液体(
Fe3O4@O2Si[PrMIM]Cl·
AlCl3),并将其用作多相
路易斯酸性催化剂,用于芳族化合物与
磺酰氯或
对甲苯磺酸酐的傅克磺酰化反应。该催化剂的稳定性、效率、易回收性和高可循环性在四次循环后催化能力没有明显损失是其优势的证明。此外,
化学计量比、底物范围广、反应时间短、砜类收率高和无溶剂反应条件也使该方法实用、环保和经济。