N-(4H-1,2,4-Triazol-4-yl)acetamide (2) were prepared by reaction of 4-amino-4H-1,2,4-triazole (1) with acetyl chloride in dry benzene. It has been reacted with various aromatic aldehyde to afford 3-(substitutedphenyl)-N-(4H-1,2,4-triazol-4-yl)acrylamide (3a-e). The synthesis ofN-(5-substitutedphenyl)-4,5-dihydro-1H-pyrazol-3-yl)-4H-1,2,4-triazol-4-amine (4a-e) is achieved by the cyclisation of3a-ewith hydrazine hydrate in ethanol. The structures of synthesized compounds were characterized by1H NMR and IR spectroscopic studies. The purity of the compounds was checked by thin layer chromatography.
通过在干燥苯中将4-氨基-4H-1,2,4-三唑醇(1)与乙酰氯反应制备了N-(4H-1,2,4-三唑-4-基)乙酰胺(2)。它与各种芳香醛反应,得到3-(取代苯基)-N-(4H-1,2,4-三唑-4-基)丙烯酰胺(3a-e)。通过将3a-e与乙醇中的肼水合物环化,实现了N-(5-取代苯基)-4,5-二氢-1H-吡唑-3-基)-4H-1,2,4-三唑-4-胺(4a-e)的合成。合成化合物的结构经过1H NMR和红外光谱研究进行表征。通过薄层色谱法检查了化合物的纯度。