Effective scCO2-ionic liquid reaction system based on symmetric aliphatic ammonium salts for the rapid CO2 fixation with aziridine to 2-oxazolidinone

The hybrid reaction system composed of supercritical carbon dioxide and room temperature ionic liquid based on symmetric tetraalkyl ammonium salts can effectively promote the carbon dioxide fixation from aziridine to 2-oxazolidinone in the presence of iodine in high yield of 98% within 5 min. The TOF value under this condition is 254 times larger than that using conventional organic solvent.