Synthesis of 4-(5-aryl-1,3,4-oxadiazol-2-yl)phenyl-hydrazine derivatives from 3-(4-hydrazinocarbonyl-phenyl)sydnones
作者:Hung-Te Chang、Kuo-Chen Chiang、Fung Fuh Wong、Chun-Sheng Huang、Yang-Ming Liao、Wen-Fa Kuo、Shaw-Bing Won、Mou-Yung Yeh
DOI:10.1002/hc.20318
日期:2007.5
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
潜在荧光活性 4-(5-aryl-1,3,4-oxadiazol-2-yl) 苯基肼衍生物的合成分三步完成。关键步骤是使用乙酸酐/高氯酸混合物作为脱水剂,使1,2-二酰基肼脱水环化形成1,3,4-恶二唑环。sydnone 部分作为掩蔽的肼,可以通过 HCl 去掩蔽以进一步应用。© 2007 Wiley Periodicals, Inc. 杂原子化学 18:438–442, 2007; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20318