Basic-functionalized recyclable ionic liquid catalyst: A solvent-free approach for Michael addition of 1,3-dicarbonyl compounds to nitroalkenes under ultrasound irradiation

A task-specific ionic liquid (TSIL) has been introduced as a recyclable catalyst in Michael addition. A series of nitroalkenes and various C-based nucleophiles were reacted in the presence of 30 mol% of recyclable basic-functionalized ionic liquid. Good to excellent yields were obtained in 30 min under ultrasound irradiation.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A task-specific ionic liquid (TSIL) has been introduced as a recyclable catalyst in Michael addition reaction. ► Solvent free approach for addition of 1,3-dicarbonyl compounds to various nitroalkenes. ► Low catalyst loading and eco-friendly approach. ► Ultrasound irradiation method affords good to excellent yields in short reaction time.