Chinese Journal of Organic Chemistry ›› 2022, Vol. 42 ›› Issue (1): 226-234.DOI: 10.6023/cjoc202107045 Previous Articles     Next Articles

ARTICLES

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)

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