有机化学    

研究论文

NHC催化[3+2]环加成反应高非对映选择性地构建环戊酮-螺环氧化吲哚化合物

高源, 刘岩, 李师伍, 唐天胜, 孟钰坤, 赵志飞*   

  1. 石河子大学化学化工学院/化工绿色过程省部共建国家重点实验室培育基地 新疆石河子 832000
  • 收稿日期:2025-07-08 修回日期:2025-10-09
  • 基金资助:
    新疆维吾尔自治区“天池英才”青年博士项目 (No. CZ002737) 和石河子大学 (No. 2022ZK003) 资助项目.

N-Heterocyclic Carbene-Catalyzed [3+2] Cycloaddition to Highly Diastereoselective Synthesis of Spirooxindole-Fused Cyclopentanes

Gao Yuan, Liu Yan, Li Shiwu, Tang Tiansheng, Meng Yukun, Zhao Zhifei*   

  1. School School of Chemistry and Chemical Engineering, Shihezi University/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering Shihezi, Xinjiang 832000
  • Received:2025-07-08 Revised:2025-10-09
  • Contact: *E-mail: zhaozf@shzu.edu.cn
  • Supported by:
    Tianchi Talent Project of Xinjiang Uygur Autonomous Region (No. CZ002737) and Shihezi University (No. 2022ZK003)

在氮杂环卡宾(NHC)催化下, α,β-不饱和醛与3-烯基氧化吲哚化合物经过[3+2]环加成反应高效合成含一个螺碳中心的连续三个立体中心的环戊酮-螺环氧化吲哚. 该反应具有良好的底物普适性,获得了中等到良好的产率 (43%-78%) 和优异的非对映选择性(> 20:1 dr). 此外,反应还具有反应条件温和, 操作简便的优点,并且克级反应也能顺利进行. 该研究为高效构建官能团化的环戊酮-螺环氧化吲哚化合物提供了新的合成方法学.

关键词: 氮杂环卡宾, 环加成, 3-烯基氧化吲哚, 环戊酮-螺环氧化吲哚

Under N-heterocyclic carbene (NHC) catalysis, a [3+2] cycloaddition reaction between α,β-unsaturated aldehydes and 3-alkenyl oxindoles efficiently constructs spirooxindole-fused cyclopentanes derivatives with three contiguous stereocenters including one spirocarbon center. This transformation demonstrates broad substrate scope, delivering products with moderate to good yields (43%-78%) and excellent diastereoselectivity (>20:1 dr). The protocol features mild reaction conditions, operational simplicity, and scalability to gram-level synthesis. This study establishes a novel synthetic methodology for the efficient construction of functionalized spirooxindole-fused cyclopentanes.

Key words: N-heterocyclic carbene, cycloaddition, 3-alkenyl oxindole, spirooxindole-fused cyclopentanes