Cycloaddition of CO2 to epoxides catalyzed by imidazolium-based polymeric ionic liquids

Saeideh Ghazali-Esfahani; Hongbing Song; Emilia Păunescu; Félix D. Bobbink; Huizhen Liu; Zhaofu Fei; Gabor Laurenczy; Mojtaba Bagherzadeh; Ning Yan; Paul J. Dyson

doi:10.1039/C3GC37085B

Cycloaddition of CO₂ to epoxides catalyzed by imidazolium-based polymeric ionic liquids†

Saeideh Ghazali-Esfahani,^ab Hongbing Song,^a Emilia Păunescu,^a Félix D. Bobbink,^a Huizhen Liu,^a Zhaofu Fei,^a Gabor Laurenczy,^a Mojtaba Bagherzadeh,^b Ning Yan^ac and Paul J. Dyson*^a

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* Corresponding authors

^a Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

^b Chemistry Department, Sharif University of Technology, P.O. Box 11155-3615, Tehran, Iran

^c Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore

Abstract

A series of cross-linked ionic polymers based on styrene-functionalized imidazolium salts with chloride, hexafluorophosphate, or tetrafluoroborate counter anions have been prepared and characterized using a range of analytical and spectroscopic techniques and electron microscopy. The polymer with the chloride anion is an efficient catalyst for the cycloaddition of carbon dioxide with epoxides to afford cyclic carbonates. The cross-linked polymer is insoluble in organic solvents and is highly stable and therefore can be easily recycled and reused.

This article is part of the themed collection: Green Solvents

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Cycloaddition of CO₂ to epoxides catalyzed by imidazolium-based polymeric ionic liquids†

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Cycloaddition of CO₂ to epoxides catalyzed by imidazolium-based polymeric ionic liquids

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