有机化学    

研究论文

可见光驱动的自由基三氟甲基化/环化反应合成三氟甲基化的吲哚/苯并咪唑稠合吡咯烷或哌啶衍生物

潘晓娜, 温欢, 王克虎, 王君姣, 黄丹凤*, 胡雨来*   

  1. 西北师范大学化学化工学院 兰州 730070
  • 收稿日期:2026-04-23 修回日期:2026-06-02
  • 基金资助:
    国家自然科学基金(No. 22461038)资助项目.

Synthesis of Trifluoromethylated Indole/Benzimidazole-Fused Pyrrolidines or Piperidines via Visible-Light-Driven Radical Trifluoromethylation/Cyclization

Pan Xiaona, Wen Huan, Wang Ke-Hu, Wang Junjiao, Huang Danfeng*, Hu Yulai*   

  1. College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070
  • Received:2026-04-23 Revised:2026-06-02
  • Contact: *E-mail: huangdf@nwnu.edu.cn; huyl@nwnu.edu.cn.
  • Supported by:
    National Natural Science Foundation of China (No. 22461038).

本研究报道了一种N-异戊烯基/N-4-甲基-3-戊烯-1-基吲哚或N-异戊烯基/N-4-甲基-3-戊烯-1-基苯并咪唑与CF₃Br在可见光诱导下的自由基三氟甲基化/环化反应,构建了三氟甲基取代的吲哚/苯并咪唑稠合吡咯烷或哌啶衍生物。该方法具有官能团兼容性高、底物适用范围广以及使用可见光作为绿色能源等优点。

关键词: 自由基串联环化, 三氟甲基化, 三氟溴甲烷, 吲哚并吡咯烷, 吲哚并哌啶

A visible-light-induced radical trifluoromethylation/cyclization reaction of N-isopentenyl/N-4-methyl-3-penten-1-yl-indoles or N-isopentenyl/ N-4-methyl-3-penten-1-yl-benzimidazoles is reported using with CF₃Br as cost-effective and readily available trifluoromethylating reagent. This method enables the efficient construction of trifluoromethyl-substituted indole/benzimidazole-fused pyrrolidine or piperidine derivatives under mild conditions. The protocol exhibits the advantages of high functional group compatibility, a broad substrate scope, and the use of visible light as a green energy source.

Key words: Radical Cascade Cyclization, Trifluoromethylation, Trifluoromethyl Bromide, Indole-fused Pyrrolidines, Indole-fused Piperidines