Synthesis 2018; 50(17): 3499-3505
DOI: 10.1055/s-0037-1610168
paper
© Georg Thieme Verlag Stuttgart · New York

Phosphine-Free [3+2] Cycloaddition of Propargylamines with Dialkyl Azodicarboxylates: An Efficient Access to Pyrazole Backbone

Authors

  • Yicheng Zhang

    a   School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. of China   eMail: xsjia@mail.shu.edu.cn
    b   Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. of China   eMail: jieliu_1024@163.com
  • Jie Liu*

    b   Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. of China   eMail: jieliu_1024@163.com
  • Xueshun Jia*

    a   School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. of China   eMail: xsjia@mail.shu.edu.cn
    c   Department of Chemistry, Shanghai University, Shanghai 200444, P. R. of China

We gratefully acknowledge the National Natural Science Foundation of China (No. 21472121) for financial support.
Weitere Informationen

Publikationsverlauf

Received: 13. März 2018

Accepted after revision: 28. April 2018

Publikationsdatum:
18. Juni 2018 (online)


Graphical Abstract

Preview

Abstract

A phosphine-free [3+2] cycloaddition reaction of the substituted propargylamines with dialkyl azodicarboxylates at room temperature is described. This reaction provides a new approach to functionalized pyrazoles in good yields and high selectivity.

Supporting Information