作者:Mykola Obushak、Vasyl Matiychuk、Mykhaylo Potopnyk、Roman Luboradzki
DOI:10.1055/s-0030-1260026
日期:2011.6
A new and convenient one-step recyclization method for the synthesis of ethyl 1-aryl-5-oxo-4,5-dihydro-1H-1,2,4-triazole-3-carboxylates is reported. Various ethyl chloro(2-arylhydrazinylidene)ethanoates react with thiazolidine-2,4-dione in the presence of potassium hydroxide to produce the 1-aryl-1,2,4-triazole derivatives in moderate to good yields. The procedure is economical, environmentally friendly
报道了一种新的方便的一步回收方法,用于合成1-芳基-5-氧代-4,5-二氢-1 H -1,2,4-三唑-3-羧酸乙酯。在氢氧化钾存在下,各种氯(2-芳基肼基亚乙基)乙基乙酯与噻唑烷-2,4-二酮反应,以中等至良好的产率产生1-芳基-1,2,4-三唑衍生物。该程序经济,环保且易于执行。 1,2,4-三唑-重氮盐-开环-噻唑烷-2,4-二酮-杂环化