Synthesis, experimental and theoretical investigations of some new 4,4′-bis(3-substituted-4,5-dihydro-1H-1,2,4-triazol-5-one-4-yl)diphenylmethane derivatives
作者:Monika Pitucha、Piotr Borowski、Zbigniew Karczmarzyk、Andrzej Fruziński
DOI:10.1016/j.molstruc.2008.09.002
日期:2009.2
5-dihydro-1H-1,2,4-triazol-5-one-4-yl)diphenylmethane derivatives 3 were synthesized in the cyclization reaction of semicarbazide derivatives 2 in alkaline solution. The synthesized compounds were characterized by elemental analyses, IR, 1H and 13C NMR, as well as MS. Molecular structure of compound 3a was determined by the X-ray analysis. Theoretical calculations (DFT/B3LYP/6-311G∗∗) of molecular structures
摘要 通过氨基脲衍生物2的环化反应合成了4,4'-双(3-取代-4,5-二氢-1H-1,2,4-三唑-5-酮-4-基)二苯甲烷衍生物3。在碱性溶液中。合成的化合物通过元素分析、IR、1H 和 13C NMR 以及 MS 进行表征。化合物3a的分子结构由X射线分析确定。对所有最终(环状)化合物进行了分子结构的理论计算(DFT/B3LYP/6-311G**)。此外,通过单参数和 SQM 缩放方法再现了 3a 的振动谱,并提出了频带分配。研究的新化合物表现出镇痛特性。