NBS-mediated practical cyclization of N-acyl amidines to 1,2,4-oxadiazoles via oxidative N‒O bond formation
作者:Ertong Li、Manman Wang、Zhen Wang、Wenquan Yu、Junbiao Chang
DOI:10.1016/j.tet.2018.07.036
日期:2018.8
A reaction involving an efficient NBS-mediated oxidative N‒O bond formation has been established for the synthesis of 1,2,4-oxadiazoles from readily accessible N-acyl amidines. The features of this synthetic method include simplicity of operation, mild reaction conditions, short reaction times, high yields, and eco-friendliness. The reaction also works well with crude N-acyl amidines obtained by amidation
已经建立了涉及有效的NBS介导的氧化N = O键形成的反应,用于由容易获得的N-酰基am合成1,2,4-恶二唑。这种合成方法的特点包括操作简单,反应条件温和,反应时间短,产率高和环保。该反应还适用于通过简单的苯甲酸和mid酰胺化而获得的粗制N-酰基s,以可扩展的方式生产生物学上相关的1,2,4-恶二唑。