4.8 Article

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

Journal

ORGANIC LETTERS
Volume 16, Issue 22, Pages 5940-5943

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol502968c

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Funding

  1. National Natural Science Foundation of China [21272190]
  2. PCSIRT in University

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A highly efficient Pt-catalyzed [3,3] sigmatropic rearrangement/cyclization cascade of N-propargylhydrazones is reported. The process provides expedient access to a variety of highly functionalized pyrazoles. The substrate has good substituted group compatibility, and the bioactive 3-CF3 pyrazoles could be synthesized easily with this method.

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