Esterification of Fluorous Biphasic System Catalyzed by Rare Earth(III) Perfluorooctanesulfonates

Chin. J. Org. Chem. ›› 2005, Vol. 25 ›› Issue (11): 1434-1436. Previous Articles Next Articles

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全氟辛基磺酸稀土金属盐催化氟两相酯化反应

易文斌，蔡春*

(南京理工大学化工学院南京 210094)

收稿日期:2005-03-24 修回日期:2005-05-21 发布日期:2005-10-30
通讯作者: 蔡春

Esterification of Fluorous Biphasic System Catalyzed by Rare Earth(III) Perfluorooctanesulfonates

YI Wen-Bin,CAI Chun*

(Chemical Engineering College, Nanjing University of Science and Technology, Nanjing 210094)

Received:2005-03-24 Revised:2005-05-21 Published:2005-10-30
Contact: CAI Chun

Abstract

The catalyst of rare earth(III) perfluorooctanesulfonates [RE(OSO₂C₈F₁₇)₃, RE＝Sc, Y, La～Lu] has been prepared for the esterification in fluorous biphasic system. Perfluorohexane (C₆F₁₄), perfluoromethylcyclohexane (C₇F₁₄), per-fluorotoluene (C₇F₈), perfluorooctane (C₈F₁₈), per-fluorooctyl bromide (C₈F₁₇Br) or perfluorodecalin (C₁₀F₁₈, cis- and trans-mixture) could be used as fluorous solvent for this reaction. The results showed that Yb(OSO₂C₈F₁₇)₃ and C₁₀F₁₈were the best catalyst and fluorous solvent respectively. The yield of Yb(OSO₂C₈F₁₇)₃ catalyzed esterification of benzoic acid with isopentanol was 99% in C₁₀F₁₈. By simple phase separation the fluor-ous phase containing catalyst could be re-utilized up to five times only with a little decrease in activity.

Key words: rare earth(III) perfluorooctanesulfonate, perfluorocarbon, fluorous biphasic catalysis, esterification

Cite this article

YI Wen-Bin,CAI Chun*. Esterification of Fluorous Biphasic System Catalyzed by Rare Earth(III) Perfluorooctanesulfonates[J]. Chin. J. Org. Chem., 2005, 25(11): 1434-1436.

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全氟辛基磺酸稀土金属盐催化氟两相酯化反应

Esterification of Fluorous Biphasic System Catalyzed by Rare Earth(III) Perfluorooctanesulfonates

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