Abstract: With the advantages of non-toxicity，non-flammability，cheapness and mild critical point conditions，carbon dioxide（CO2）has become the most adequately studied supercritical fluid medium that is widely used in extraction，chemical reaction，material preparation etc. as a favored alternative to conventional solvent. This review summarizes the utilization of CO2 in organic synthesis both as a reagent and as a medium in recent years，especially，as starting materials to prepare organic carbonates，organic acids，phenolic acid，formic acid and their derivatives.

摘要： 二氧化碳（CO2）因无毒、不燃、价格低廉、临界点条件温和等优点而成为超临界流体中研究最多的介质，广泛应用于萃取分离、化学反应、材料制备等领域，是常规溶剂的理想替代者。同时，CO2的固定和利用也受到广泛的关注。本文综述了近年来超临界二氧化碳同时作为反应物和反应介质在有机合成中的一些应用，着重介绍了以超临界二氧化碳为原料，制备有机碳酸酯、有机酚酸、甲酸及其衍生物等的反应。