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Synlett 2012; 23(19): 2850-2852
DOI: 10.1055/s-0032-1317474
letter
© Georg Thieme Verlag Stuttgart · New York

Efficient One-pot Synthesis of 1H-Pyrazolo[1,5-b]indazoles by a Domino Staudinger–Aza-Wittig Cyclization

Fen-Fen Zhao
a   Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan 430079, P. R. of China
,
Yan-Mei Yan
a   Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan 430079, P. R. of China
,
Rui Zhang
b   College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. of China   Fax: +86(27)67862041   Email: mwding@mail.ccnu.edu.cn
,
Ming-Wu Ding*
a   Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan 430079, P. R. of China
› Author Affiliations
Further Information

Publication History

Received: 25 August 2012

Accepted after revision: 20 September 2012

Publication Date:
18 October 2012 (online)

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Abstract

1H-Pyrazolo[1,5-b]indazoles were prepared via a domino Staudinger–aza-Wittig cyclization in one-pot fashion, starting from easily accessible azides and triphenylphosphine.

Key words

1H-pyrazolo[1,5-b]indazole - domino reaction - aza-Wittig reaction - azide - iminophosphorane

Supporting Information

    for this article is available online at http://www.thieme-connect.com/ejournals/toc/synlett.
  • Supporting Information
 

  • References and Notes

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