有机化学 ›› 2025, Vol. 45 ›› Issue (8): 2923-2931.DOI: 10.6023/cjoc202412022 上一篇    下一篇

研究论文

乙酸介导的咪唑并吡啶与乙二醛水合物的无金属氧化C—H交叉偶联反应

张连吉a, 王炳福b, 潘大龙a, 王翠苹a,*(), 赵玉辉a, 迟海军a, 董岩a, 魏万国a,c, 张志强a,*()   

  1. a 辽宁科技大学化学工程学院 辽宁鞍山 114051
    b 渤海大学实验与设备管理中心 辽宁锦州 121013
    c 上海如鲲新材料股份有限公司 上海 201204
  • 收稿日期:2024-12-24 修回日期:2025-03-10 发布日期:2025-03-31
  • 基金资助:
    国家自然科学基金(22177046); 国家自然科学基金(21542017); 辽宁省“兴辽人才计划”(XLYC1802074)

Acetic Acid-Mediated Metal-Free Oxidative C—H Cross-Coupling of Imidazopyridines and Glyoxal Hydrates

Lianji Zhanga, Bingfu Wangb, Dalong Pana, Cuiping Wanga,*(), Yuhui Zhaoa, Haijun Chia, Yan Donga, Wanguo Weia,c, Zhiqiang Zhanga,*()   

  1. a School of Chemical Engineering, University of Sciences and Technology Liaoning, Anshan, Liaoning 114051
    b Experiment & Equipment Administration Center of Bohai University, Jinzhou, Liaoning 121013
    c Shanghai RoleChem Co., Ltd., Shanghai 201204
  • Received:2024-12-24 Revised:2025-03-10 Published:2025-03-31
  • Contact: *E-mail:cuiping1025@126.com;zhangzhiqiang@ustl.edu.cn
  • Supported by:
    National Natural Science Foundation of China(22177046); National Natural Science Foundation of China(21542017); Liaoning Province “Xingliao Talent Program” Project(XLYC1802074)

在空气气氛下, 发展了一种高效的乙酸介导的咪唑并吡啶与乙二醛水合物的无金属氧化C—H交叉偶联反应. 该方法具有广泛的底物适用范围, 良好的官能团容忍性, 能够以良好的产率构建一系列1,2-二羰基咪唑[1,2-a]吡啶类化合物. 反应机理研究表明, 反应通过亲电取代和随后的氧化途径进行.

关键词: 咪唑并吡啶, 乙二醛水合物, 无金属催化, 咪唑功能化

An efficient acetic acid mediated metal-free oxidative C—H cross coupling of imidazo[1,2-a]pyridines with glyoxal hydrates has been developed under air atmosphere. The present protocol exhibits broad substrate scope, good functional group tolerance, and enables the construction of a series of 1,2-dicarbonyl imidazo[1,2-a]pyridines in good yields. The reaction mechanism studies suggest that the reactions proceed through the electrophilic substitution and subsequent oxidation pathway.

Key words: imidazopyridine, glyoxal hydrate, metal-free, imidazole functionalization