Cyanothioacetamides as a synthetic platform for the synthesis of aminopyrazole derivatives
作者:Valeriy O Filimonov、Alexandra I Topchiy、Vladimir G Ilkin、Tetyana V Beryozkina、Vasiliy A Bakulev
DOI:10.3762/bjoc.19.87
日期:——
Abstract It was shown that the reaction of 2-cyanothioacetamides with hydrazine involves both cyano- and thioamide groups, and 3,5-diaminopyrazoles are formed. In the reaction of 2-cyano-3-(dimethylamino)-N,N-dimethylprop-2-enethioamides with hydrazine and its derivatives, the interaction proceeds with the participation of cyano- and enamine groups, not affecting the thiocarbamoyl group, and leads
摘要 结果表明,2-氰基硫代乙酰胺与肼的反应涉及氰基和硫代酰胺基团,并形成3,5-二氨基吡唑。在2-氰基-3-(二甲氨基)-N,N-二甲基丙-2-烯硫酰胺与肼及其衍生物的反应中,相互作用在氰基和烯胺基团的参与下进行,不影响硫代氨基甲酰基,并导致形成4-硫代氨基甲酰基吡唑。开发了一种合成方法,合成了一系列1-取代-4-硫代氨基甲酰基吡唑类化合物。使用NMR光谱和质谱研究了反应产物的结构,并通过X射线衍射分析进行了确认。 贝尔斯坦 J. 组织。化学。 2023, 19, 1191–1197。doi:10.3762/bjoc.19.87