Propylene oxide assisted one-pot, tandem synthesis of substituted-1,3,4-oxadiazole-2(3H)-ones in water
作者:Xu Yan、Shuo Zhou、Yuanqiang Wang、Zemei Ge、Tieming Cheng、Runtao Li
DOI:10.1016/j.tet.2012.07.004
日期:2012.9
developed for the synthesis of substituted-1,3,4-oxadiazole-2(3H)-one derivatives via a novel one-pot, tandem procedure assisted by propylene oxide. The 5-substitued-1,3,4-oxadiazole-2(3H)-ones and 3,5-disubstitued-1,3,4-oxadiazole-2(3H)-ones were, respectively, obtained from three-component reaction of acylhydrazines, carbon disulfide, and propylene oxide, and four-component reaction of acylhydarazines
已经开发了通过新颖的一锅式,串联方式和环氧丙烷辅助合成取代的1,3,4-恶二唑-2(3 H)-one衍生物的方法。从3个分子中分别获得5个取代的1,3,4-恶二唑-2(3 H)-one和3,5-个取代的1,3,4-恶二唑-2(3 H)-one酰基肼,二硫化碳和环氧丙烷的三组分反应,以及酰基hy嗪,二硫化碳,环氧丙烷和有机卤化物的四组分反应。在磷酸钾的存在下,以水为溶剂进行反应,以良好至优异的产率提供预期的产物。