有机化学 ›› 2023, Vol. 43 ›› Issue (1): 195-201.DOI: 10.6023/cjoc202206017 上一篇    下一篇

研究论文

I2催化β-酮腈与1H-吡唑-5-胺的环化反应

桑田, 贾帆, 何静, 李春天, 刘岩*(), 刘平*()   

  1. 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
  • 收稿日期:2022-06-12 修回日期:2022-08-16 发布日期:2022-09-15
  • 通讯作者: 刘岩, 刘平
  • 基金资助:
    国家自然科学基金(21563025); 国家自然科学基金(22162022)

I2-Catalyzed Cyclization of β-Ketonitrile with 1H-Pyrazol-5-amine

Tian Sang, Fan Jia, Jing He, Chuntian Li, Yan Liu(), Ping Liu()   

  1. Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832003
  • Received:2022-06-12 Revised:2022-08-16 Published:2022-09-15
  • Contact: Yan Liu, Ping Liu
  • Supported by:
    National Natural Science Foundation of China(21563025); National Natural Science Foundation of China(22162022)

开发了一种碘催化的1H-吡唑-5-胺和β-酮基腈的环化反应, 用来合成吡唑并[1,5-a]嘧啶. 该方法提供了获得结构多样的吡唑并[1,5-a]嘧啶衍生物的有效途径, 其产率可达到良好至优秀. 该方法具有反应条件简单温和、底物范围广等优点, 并可以克级规模放大反应.

关键词: I2催化, 环化反应, 吡唑并[1,5-a]嘧啶

An I2-catalyzed cyclization reaction of 1H-pyrazol-5-amine and β-ketonitrile for the synthesis of pyrazolo[1,5- a]pyrimidines was developed. This method provides an efficient way to obtain structurally diverse pyrazolo[1,5-a]pyrimidine derivatives in good to excellent yields. The method has the advantages of simple operation, mild reaction conditions and a wide range of substrates. It can also be scaled up.

Key words: I2-catalyzed, cyclization reaction, pyrazolo[1,5-a]pyrimidines