关键词: 氟两相催化, 全氟辛基磺酰亚胺盐, 全氟溶剂, Friedel-Crafts烷基化, 稀土

Abstract:

The metal bis(perfluorooctanesulfonyl)imide complexes were prepared and used in Friedel-Crafts alkylation in fluorous biphasic system. The effects of  Lewis acid catalysts, reaction time, temperature and dosage of catalysts, as well as the catalytic reaction of different alkylating agents with  aromatic compounds in the presence of 0.2% molar fraction of Yb\[N(SO2C8F17)2]3 were investigated. All the experimental results show that metal bis(perfluorooctanesulfonyl)imide complexes were more effective for Friedel-Crafts alkylation than conventional Lewis acid catalysts. Furthermore, by simple phase-separation, the fluorous phase containing only catalyst could be re-utilized up to four times with a slight decrease in activity.

Key words: fluorous biphasic catalysis,metal bis(perfluorooctanesulfonyl)imide complex, perfluorocarbon,rare earth