Microwave-assisted, rapid cycloaddition of allyl glycidyl ether and CO2 by employing pyridinium-based ionic liquid catalysts
•Microwave-assisted cycloaddition of epoxides and CO2 using pyridinium ionic liquids•Cycloaddition reaction occurred over a short reaction time with high TOF.•The effects of reaction parameters were investigated.•Material usage and microwave cycloaddition make the process rapid and green.
This study investigated the use of pyridinium-based ionic liquids (ILs) as an efficient catalyst for the rapid solvent-free microwave-assisted cycloaddition of allyl glycidyl ether (AGE) and CO2 to yield allyl glycidyl carbonate (AGC) under moderate reaction conditions. The cycloaddition reaction occurred over a short reaction time of 30 s, resulting in a high turnover frequency (TOF) ranging from 200 to 7000 h− 1. The effects of alkyl chain length and anion of pyridinium-based catalysts on the cycloaddition reactivity were studied. The effects of reaction parameters such as the amount of catalyst, microwave power, CO2 pressure, and reaction time were also investigated.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide
Journal: Catalysis Communications - Volume 54, 5 September 2014, Pages 31–34