Disubstituted 1,2,4-oxadiazoles have been synthesized in good yields and good purity in one pot procedure by reaction of aromatic nitriles, hydroxylamine hydrochloride and sodium carbonate in ethylene glycol under heating at 195°C. The structures of different 1,2,4-oxadiazoles obtained were confirmed by 1H, 13C NMR and mass spectroscopy.
通过在195℃加热下使芳族腈,盐酸羟胺和碳酸钠在乙二醇中反应,在一个锅法中以高收率和高纯度合成了二取代的1,2,4-恶二唑。通过1 H,13 C NMR和质谱确认所获得的不同的1,2,4-恶二唑的结构。