Hydroxyl-functionalized ionic liquid: a novel efficient catalyst for chemical fixation of CO2 to cyclic carbonate
J Sun, S Zhang, W Cheng, J Ren - Tetrahedron Letters, 2008 - Elsevier
A series of hydroxyl-functionalized ionic liquids (HFILs) were synthesized and characterized.
They showed efficient reactivity and reusability toward the coupling of epoxide and CO2
without any additional co-catalyst and organic solvent. Highest activity and selectivity were
achieved in the presence of 1-(2-hydroxyl-ethyl)-3-methylimidazolium bromide (HEMIMB) in
comparison with other similar catalysts investigated. The relationship between the higher
catalytic reactivity and OH-functional group was proposed.
They showed efficient reactivity and reusability toward the coupling of epoxide and CO2
without any additional co-catalyst and organic solvent. Highest activity and selectivity were
achieved in the presence of 1-(2-hydroxyl-ethyl)-3-methylimidazolium bromide (HEMIMB) in
comparison with other similar catalysts investigated. The relationship between the higher
catalytic reactivity and OH-functional group was proposed.
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