有机化学 ›› 2021, Vol. 41 ›› Issue (6): 2290-2301.DOI: 10.6023/cjoc202102051 上一篇    下一篇

所属专题: 有机光催化虚拟合辑 热点论文虚拟合集

研究论文

可见光催化炔烃串联氰基烷基磺酰化/环化

刘宇a,b, 陈赞a, 陈镤a, 熊碧权a, 谢军a,*(), 刘岸a,*(), 梁云b, 唐课文a   

  1. a 湖南理工学院化学化工学院 湖南岳阳 414006
    b 湖南师范大学 湖南省有机功能分子组装与应用重点实验室 长沙 410081
  • 收稿日期:2021-02-27 修回日期:2021-03-18 发布日期:2021-03-25
  • 通讯作者: 谢军, 刘岸
  • 基金资助:
    国家自然科学基金(22078084); 国家自然科学基金(51874132); 湖南省教育厅科学研究基金(20A224); 湖南省教育厅科学研究基金(20A213); 湖南省教育厅科学研究基金(18B355); 湖南省科技计划项目(2020RC3056); 湖南省科技计划项目(2018TP1017); 湖南省自然科学基金(2020JJ5221); 湖南省自然科学基金(2020JJ5212)

Visible-Light-Catalyzed Tandem Cyanoalkylsulfonylation/ Cyclization of Alkynes

Yu Liua,b, Zan Chena, Pu Chena, Biquan Xionga, Jun Xiea(), An Liua(), Yun Liangb, Kewen Tanga   

  1. a Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan 414006
    b Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081
  • Received:2021-02-27 Revised:2021-03-18 Published:2021-03-25
  • Contact: Jun Xie, An Liu
  • Supported by:
    National Natural Science Foundation of China(22078084); National Natural Science Foundation of China(51874132); Scientific Research Fund of Hunan Provincial Education Department(20A224); Scientific Research Fund of Hunan Provincial Education Department(20A213); Scientific Research Fund of Hunan Provincial Education Department(18B355); Science and Technology Planning Project of Hunan Province(2020RC3056); Science and Technology Planning Project of Hunan Province(2018TP1017); Natural Science Foundation of Hunan Province(2020JJ5221); Natural Science Foundation of Hunan Province(2020JJ5212)

报道了一种在无过渡金属条件下可见光催化炔烃与环酮肟衍生物的串联氰基烷基磺酰化/环化反应, 通过SO2的插入合成2-氰基烷基磺酰基-9H-吡咯并[1,2-a]吲哚. 该碳碳叁键的双官能团化包括自由基机理, 依次经历了亚胺自由基的形成、环酮的开环、SO2的插入、磺酰基对碳碳叁键的加成、分子内环化和异构化.

关键词: 可见光催化, SO2插入, 环酮肟酯, N-炔丙基吲哚

A transition-metal-free visible-light-mediated tandem cyanoalkylsulfonylation/cyclization of alkynes with cycloketone oxime derivatives for the construction of 2-cyanoalkylsulfonyl-9H-pyrrolo[1,2-a]indoles through the insertion of SO2 is reported. The difunctionalization of carbon-carbon triple bonds includes a radical mechanism and undergoes the formation of iminyl radical, ring-opening of cycloketone, insertion of SO2, addition of sulfonyl radical to carbon-carbon triple bonds, intramolecular cyclization and isomerization.

Key words: visible-light-catalysis, the insertion of SO2, cycloketone oxime esters, N-propargylindoles