有机化学 ›› 2022, Vol. 42 ›› Issue (1): 226-234.DOI: 10.6023/cjoc202107045 上一篇    下一篇

研究论文

一锅两步策略高效合成3-芳基-4-(芳硫基)-1H-吡唑-5-胺衍生物

冯易浇a, 何静a, 韦玥婷a, 汤婷b, 李春天a,*(), 刘平a,*()   

  1. a 石河子大学化学化工学院/化工绿色过程兵团重点实验室 新疆石河子 832003
    b 石河子大学分析测试中心 新疆石河子 832003
  • 收稿日期:2021-07-21 修回日期:2021-08-24 发布日期:2021-09-08
  • 通讯作者: 李春天, 刘平
  • 基金资助:
    国家自然科学基金(21563025)

One-Pot Two-Step Strategy for Efficient Synthesis of 3-Aryl-4-(arylthio)-1H-pyrazol-5-amines Derivatives

Yijiao Fenga, Jing Hea, Yueting Weia, Ting Tangb, Chuntian Lia(), Ping Liua()   

  1. a Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832000
    b Analysis and Testing Center of Shihezi University, Shihezi, Xinjiang 832000
  • Received:2021-07-21 Revised:2021-08-24 Published:2021-09-08
  • Contact: Chuntian Li, Ping Liu
  • Supported by:
    National Natural Science Foundation of China(21563025)

建立了3-氧代-3-芳基丙腈、肼基甲酸甲酯(或水合肼)和芳基磺酰肼的一锅两步反应. 在I2N-碘代丁二酰亚胺(NIS)的作用下, 通过环化、磺基化和脱酯基化反应构建了一系列3-芳基-4-(芳硫基)-1H-吡唑-5-胺化合物. 该方法具有良好的原子经济性、温和的反应条件、广泛的底物适用范围和克级规模的合成. 此外, 还对3-芳基-4-(芳硫基)-1H-吡唑-5-胺产物的进一步转化进行了研究.

关键词: 一锅两步, 1H-吡唑-5-胺, 环化, 亚磺酰化

One-pot two-step reaction of 3-oxo-3-arylpropanenitriles, methyl hydrazinecarboxylate (or hydrazine hydrate), and arylsulfonyl hydrazides has been established, and a series of 3-aryl-4-(arylthio)-1H-pyrazol-5-amines were constructed by sequential cyclization, sulfenylation, and removal of COOMe group under the action of I2 and N-iodo-succininide (NIS), respectively. The method represents good atomic economy, mild reaction conditions, broad substrate scope, and gram-scale synthesis. Moreover, the further transformations of 3-aryl-4-(arylthio)-1H-pyrazol-5-amine products were also investigated.

Key words: one-pot two-step, 1H-pyrazol-5-amine, cyclization, sulfenylation