Journal of the Chemical Society C: Organic

Heterocyclic compounds from urea derivatives. Part XVIII. Adducts from aminoguanidines and aroyl isothiocyanates and their cyclisation

F Kurzer

文献索引：Kurzer,F. Journal of the Chemical Society [Section] C: Organic, 1970 , p. 1805 - 1813

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被引用次数: 2

摘要

Equimolar quantities of aroyl isothiocyanates and aminoguanidine hydrochloride react additively in aqueous methanol affording excellent yields of 1-amidino-4-aroyl (thiosemicarbazides), isolable as hydrochlorides, picrates, or free bases. 1-Amidino-4- benzoyl (thiosemicarbazide) hydrochloride is cyclised by hydrochloric or orthophosphoric acid to 2-amino-5-benzamido-1, 3, 4-thiadiazole, by acetic anhydride to the corresponding ...