Synthesis of cyclic di- and trithiocarbonates from epoxides and carbon disulfide catalyzed by N-heterocyclic carbene
作者:Jinsong Cao、Meng Yu、Hanzhu Li、Liang Wang、Xu Zhu、Guangying Wang、Yanhui Shi、Changsheng Cao
DOI:10.1007/s11164-014-1634-5
日期:2015.8
Abstract The synthesis of cyclic di- and trithiocarbonates from the reaction of epoxides and carbon disulfide catalyzed by N -heterocyclic carbene prepared in situ is described. 1,3-Oxathiolane-2-thiones or 1,3-dithiolane-2-thiones was obtained in high yield with good selectivity when the reactions were carried out with 4 in DMSO at 100 °C in the presence of K2CO3. The possible catalytic mechanism
摘要描述了就地制备 的 N- 杂环卡宾催化环氧化物与二硫化碳反应合成环二硫代和三硫代碳酸酯 。当在100℃下在K 2 CO 3存在下在 4中在DMSO中进行4 反应时,可以高产率,高选择性地获得1,3-氧杂硫杂环戊烷-2-硫酮或1,3-二硫杂环戊烷-2-硫酮 。提出了可能的催化机理。图形概要