有机化学 ›› 2026, Vol. 46 ›› Issue (7): 2743-2750.DOI: 10.6023/cjoc202603041 上一篇    下一篇

研究论文

镍催化三氟甲基取代烯烃与烷基甲磺酸酯的烯丙位脱氟交叉亲电偶联

房毅, 王川*()   

  1. 中国科学技术大学化学系 合肥 230026
  • 收稿日期:2026-03-30 修回日期:2026-04-23 发布日期:2026-06-10
  • 基金资助:
    国家自然科学基金(22271267); 国家自然科学基金(22471256)

Nickel-Catalyzed Allylic Defluorinative Cross-Electrophile Coupling of Trifluoromethyl-Substituted Alkenes with Alkyl Mesylates

Yi Fang, Chuan Wang*()   

  1. Department of Chemistry, University of Science and Technology of China, Hefei 230026
  • Received:2026-03-30 Revised:2026-04-23 Published:2026-06-10
  • Contact: *E-mail: chuanw@ustc.edu.cn
  • Supported by:
    National Natural Science Foundation of China(22271267); National Natural Science Foundation of China(22471256)

基于镍催化的还原体系, 成功发展了三氟甲基取代烯烃与二级烷基甲磺酸酯的分子间烯丙位脱氟亲电交叉偶联反应, 发展了一种以醇类衍生物为亲电烷基来源、直接且高效构建偕二氟烯烃的新方法. 该反应采用原位(拟)卤素交换策略, 在碘化钠作用下将烷基甲磺酸酯原位转化为高活性的烷基碘物种, 从而顺利进入后续的催化循环.

关键词: 碳氟键断裂, 碳氧键断裂, 偕二氟烯烃, 交叉亲电偶联, 镍催化

A nickel-catalyzed reductive system that enables an intermolecular allylic defluorinative cross-electrophile coupling between trifluoromethyl-substituted alkenes and secondary alkyl mesylates is developed. It provides a direct and efficient method for constructing gem-difluoroalkenes, using alcohol-derived substrates as electrophilic alkyl sources. The reaction proceeds via an in situ (pseudo)halide-exchange strategy, in which sodium iodide converts alkyl mesylates into highly reactive alkyl iodide species, thereby enabling their smooth participation in the subsequent catalytic cycle.

Key words: C—F bond cleavage, C—O bond cleavage, gem-difluoroalkene, cross-electrophile coupling, nickel catalysis