A study on the condensation reaction of aryl substituted 4-amine-1,2,4-triazole with benzaldehydes: Structures and spectroscopic properties of schiff bases and stable hemiaminals
作者:Katarzyna Wajda-Hermanowicz、Damian Pieniążczak、Robert Wróbel、Aleksandra Zatajska、Zbigniew Ciunik、Sławomir Berski
DOI:10.1016/j.molstruc.2016.02.047
日期:2016.6
dimers linked by strong O–H … .N1Tr hydrogen bonds. The Schiff bases obtained from the unsymmetrical 3-methyl,5-phenyl-1,2,4-triazole was found to be a different E-conformer which was determined through solution NMR and crystallographic diffraction analysis (13). The molecular geometry of the unsymmetrical triazole derivatives: hemiaminal (12) and Schiff base (13) were also optimized using density functional
摘要 合成了一系列稳定的含有3,5-二取代1,2,4-三唑衍生物的半胺醛和席夫碱。所制备化合物的结构经1H NMR、13C NMR、IR、MS和元素分析确证。还讨论了三唑环取代基对半缩醛形成的空间和电子效应。对从 4-amino-3,5-dipyridyn-2-yl-1,2,4-triazole (4, 5) 获得的半缩氨酸的单晶 X 射线衍射研究揭示了通过强 O-H 连接的中心对称二聚体的形成...... .N1Tr 氢键。发现从不对称 3-甲基,5-苯基-1,2,4-三唑获得的席夫碱是一种不同的 E-conformer,通过溶液 NMR 和晶体衍射分析 (13) 确定。不对称三唑衍生物的分子几何结构: