Preparation method of cyclic carbonate

The invention discloses a preparation method of cyclic carbonate, and belongs to the field of small molecule green catalysis. According to the method, under the catalysis of a catalyst with a sulfonium salt structure, epoxide is catalyzed to react with carbon dioxide to obtain a target product. By adopting the method, the product can be prepared with high selectivity, the yield is relatively high, the reaction time is short, the catalyst is simple to synthesize and low in cost, and the obtained cyclic carbonate is free of metal residues. 本发明公开了一种环状碳酸酯的制备方法，属于小分子绿色催化领域。该方法是在硫鎓盐类结构的催化剂催化下，催化环氧化物与二氧化碳反应得到目标产物。采用该方法可高选择性制备产物，产率较高，反应时间短，且催化剂合成简单，成本低，所得到的环状碳酸酯无金属残留。