二氧化碳是一种储量丰富且廉价易得的可再生碳一资源.将二氧化碳高效转化成高附加值化学品的有机合成方法学研究目前已经成为最为活跃的研究方向之一.由于环化反应种类的多样性以及环化产物在众多生物活性分子结构中的广谱性,二氧化碳参与的环化反应也深受广大研究者重视.综述了最近二氧化碳参与的环化新反应合成内酰胺、内酯、邻苯二甲酰亚胺、环状酸酐、苯并噻唑及苯并咪唑等杂环化合物,同时也介绍了一些二氧化碳作为反应底物但不参与成环过程合成环状羧酸的新反应.
Carbon dioxide is a cheap, abundant and renewable C_1 feedstock. Methodology study on the transformation of carbon dioxide into highly value-added chemicals has become one of the most active topics in organic chemistry. Owing to the diversity of cyclization reaction and vast occurrence of various heterocyclic motifs in biologically important molecules, the cyclization reactions using carbon dioxide have gained much attention. This review therefore aims to principally describe the recent progress in the new cyclization reactions using carbon dioxide as feedstock to synthesize lactams, lactones, cyclic anhydrides, benzothiazoles, benzimidazoles and other heterocyclic compounds.