Dual-ionic imidazolium salts to promote synthesis of cyclic carbonates at atmospheric pressure

Dual-ionic imidazolium salts to promote synthesis of cyclic carbonates at atmospheric pressure

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Novel dual-ionic imidazolium salts are shown to display excellent catalytic activity for cycloaddition of carbon dioxide and epoxides under room temperature and atmospheric pressure (0.1 MPa) without any solvent and co-catalyst leading to 96.1% product yield.

It can be reused five times to keep the Sewing Machine Accessories product yield over 90%.These intriguing results are attributed to a new reaction mechanism, which is supported by theoretical calculations along with the measurements of 13C NMR spectrum and Fourier transform infrared spectroscopy (FT-IR).The excellent catalytic activity can be traced to a CO2-philic group along with an electrophilic hydrogen atom.

Our work shows that incorporation of Shrubs CO2-philic group is an feasible pathway to develop the new efficient ionic liquids.