Organic Chemistry Portal



Synthesis of Polysubstituted Pyrazoles by a Platinum-Catalyzed Sigmatropic Rearrangement/Cyclization Cascade

Jia-Jie Wen, Hai-Tao Tang, Kai Xiong, Zong-Cang Ding and Zhuang-Ping Zhan*

*Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China, Email:

J.-J. Wen, H.-T. Tang, K. Xiong, Z.-C. Ding, Z.-P. Zhan, Org. Lett., 2014, 16, 5940-5943.

DOI: 10.1021/ol502968c (free Supporting Information)

see article for more reactions


A highly efficient Pt-catalyzed [3,3] sigmatropic rearrangement/cyclization cascade of N-propargylhydrazones provides expedient access to various highly functionalized pyrazoles.

see article for more examples

Key Words


ID: J54-Y2014