Synthesis and Characterization of 2,5-Disubstituted-1,3,4-oxadiazole Derivatives with Thioether Groups
作者:Nafal Nazarbahjat、Zanariah Abdullah、Mahmood Ameen Abdulla、Azhar Ariffin
DOI:10.14233/ajchem.2015.17872
日期:——
New 2,5-disubstituted-1,3,4-oxadiazole derivatives were synthesized by the reaction of 2-(ethylsulfanyl)benzohydrazide with CS2 in KOH to afford 5-[2-(ethylsulfanyl)phenyl]-1,3,4-oxadiazole-2(3H)-thione. On alkylation with benzylic halides in the presence of anhydrous potassium carbonate as a base and dry acetone as a solvent gave the new 1,3,4-oxadiazole derivatives. An attempt to design a series of new derivatives derived from thiosalicylic acid by coupling 1,3,4-oxadiazole with benzimidazole moiety and another 1,3,4-oxadiazole ring has been put forward for the first time. The structure of the compounds was confirmed by IR, 1H NMR,13C NMR and mass spectra.
2-(ethylsulfanyl)benzohydrazide 与 CS2 在 KOH 中反应,得到 5-[2-(ethylsulfanyl)phenyl]-1,3,4-oxadiazole-2(3H)-thione,从而合成了新的 2,5-二取代-1,3,4-噁二唑衍生物。在以无水碳酸钾为碱和干丙酮为溶剂的情况下,用苄基卤化物进行烷基化,得到了新的 1,3,4-噁二唑衍生物。通过将 1,3,4-恶二唑与苯并咪唑分子和另一个 1,3,4-恶二唑环偶联,首次尝试设计了一系列从硫代水杨酸衍生的新衍生物。红外光谱、1H NMR、13C NMR 和质谱证实了这些化合物的结构。