✦ LIBER ✦

Synthesis of 4-(5-aryl-1,3,4-oxadiazol-2-yl)phenyl-hydrazine derivatives from 3-(4-hydrazinocarbonyl-phenyl)sydnones

✍ Scribed by Hung-Te Chang; Kuo-Chen Chiang; Fung Fuh Wong; Chun-Sheng Huang; Yang-Ming Liao; Wen-Fa Kuo; Shaw-Bing Won; Mou-Yung Yeh

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 150 KB
Volume: 18
Category: Article
ISSN: 1042-7163
DOI: 10.1002/hc.20318

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✦ Synopsis

Abstract

The synthesis of potential fluorescent active 4‐(5‐aryl‐1,3,4‐oxadiazol‐2‐yl)phenylhydrazine derivatives was accomplished in three steps. The key step was the dehydration cyclization of 1,2‐diacylhydrazines to form the 1,3,4‐oxadiazole ring by use of acetic anhydride/perchloric acid mixture as the dehydrating agent. The sydnone moiety served as the masked hydrazines, which could be demasked by HCl for further application. © 2007 Wiley Periodicals, Inc. Heteroatom Chem 18:438–442, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20318

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