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Citation: YI Wen-Bin, CAI Chun. Friedel-Crafts Alkylation in Fluorous Biphasic System Catalyzed by Rare Earth(Ⅲ) Perfluorooctanesulfonates[J]. Chinese Journal of Applied Chemistry, ;2006, 23(2): 212-214. shu

Friedel-Crafts Alkylation in Fluorous Biphasic System Catalyzed by Rare Earth(Ⅲ) Perfluorooctanesulfonates

YI Wen-Bin ,
CAI Chun ^,

1.
Chemical Engineering College, Nanjing University of Science & Technology, Nanjing 210094

Corresponding author: CAI Chun,
Received Date: 26 March 2005
Available Online: 20 August 2005
Fund Project: 国防科工委"十五"预研基金资助项目(40406020103) (40406020103)

The rare earth(Ⅲ) perfluorooctanesulfonates(RE(OSO₂C₈F₁₇)₃,RE:Sc,Y,La~Lu) catalysts have been prepared and used in Friedel-Crafts alkylation in fluorous biphasic systems.Perfluorohexane(C₆F₁₄),perfluoromethylcyclohexane(C₇F₁₄),perfluorotoluen(C₇F₈),perfluorooctane(C₈F₁₈),perfluorooctyl bromide(C₈F₁₇Br) and perfluorodecalin(C₁₀F₁₈,cis and trans-mixture) can be used as the fluorous solvent for this kind of reaction.The catalytic activities of other rare earth metal salts with different ligands were tested.The results show that Yb(OSO₂C₈F₁₇)₃ and(C₁₀F₁₈) were the best catalyst and fluorous solvent respec-tively.The yield of alkylation of anisole with benzyl alcohol was 96% in the presence of Yb(OSO₂C₈F₁₇)₃ and C₁₀F₁₈.By simple phase-separation the fluorous phase containing only catalyst could be re-utilized up to five times with a slight decrease in activity.
- fluorous biphasic catalysis,
- rare earth(Ⅲ) perfluorooctanesulfonate,
- perfluorocarbon,
- Friedel-Crafts alkylation
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