期刊
TETRAHEDRON LETTERS
卷 53, 期 5, 页码 522-525出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2011.11.083
关键词
Acylhydrazones; Pyrazolidines; [3+2] Cyclization; Phosphonic acid
资金
- Frasch Foundation
- Wake Forest University
- Berry College
A phosphonic acid catalyst has been shown to promote the intramolecular cyclization of acylhydrazone 1. The resulting heterocyclic products, pyrazolidines, were isolated in good yield for a variety of acylhydrazones. Studies into the role of the phosphonic acid are presented and discussed. (C) 2011 Elsevier Ltd. All rights reserved.
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