Green synthesis of oxazolidinone from propylene carbonate catalyzed by ionic solid catalyst

In recent years, researchers have paid great attention to the preparation of oxazolidinone. In this paper, an ionic solid catalyst, IL-OAc, was synthesized for the synthesis of oxazolidinone by the reaction of propylene carbonate and aniline. Its structure and physical and chemical characteristics were characterized by SEM, FT-IR, EDS, TG-DTA, BET and 1H MAS NMR. The influence of reaction conditions on catalytic performance was optimized. Under the optimum reaction conditions, the conversion of aniline was as high as 92.4% and the yield of oxazolidinone was 84.7%. After 6 cycles, the catalytic performance did not decrease obviously. The reaction conditions were further determined by response surface method, and the fitting results were in good agreement with the experimental results.