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.
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Kawanami et al. (2004) studied this question.
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