Ionic liquid-functionalized SBA-15 mesoporous material:e?cient heterogeneous catalyst in versatile organic reactions

摘要

Ionic liquid-functionalized mesoporous materials exhibited high catalytic activity in versatile organic reactions,such as cycloaddition of carbon dioxide (CO2)with epoxide,aza-Michael addition of amines to alpha,beta-unsaturated carbonyl compounds,and the Biginelli reaction of aldehyde,ethyl acetoacetate and urea.Recycling of the catalyst in these reactions could be carried out and the catalyst used at least five times without significant loss in activity.