Mechanism of the formation of 1, 2, 4??thiadiazoles by condensation of aromatic thioamides and of N??substituted thioureas

…, C Boga, AB Corradi, P Sgarabotto

文献索引：Forlani, Luciano; Lugli, Andrea; Boga, Carla; Corradi, Anna Bonamartini; Sgarabotto, Paolo Journal of Heterocyclic Chemistry, 2000 , vol. 37, # 1 p. 63 - 69

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被引用次数: 26

摘要

Abstract The condensation reaction of thiobenzamide,(as well as thionicotinamide and isothionicotinamide) in the presence of dimethyl sulfoxide and of an acid, affords 3, 5- diphenyl-1, 2, 4-thiadiazole. Under the same experimental conditions, N-substituted thioureas are also condensed to 1, 2, 4-thiadiazole derivatives; their structure is ascertained by spectroscopic properties and by X-ray diffraction. Some information on the mechanism ...