作者:Ahmed A. Al-Amiery、Redah I. Al-Bayati、Fouad M. Saed、Wassan B. Ali、Abdul Amir H. Kadhum、Abu Bakar Mohamad
DOI:10.3390/molecules170910377
日期:——
A series of pyranopyrazoles, namely, 7-(2-aminoethyl)-3,4-dimethyl-1-phenyl-1H-pyrazolo[3,4-b]pyridin-6(7H)-one (2), (Z)-3,4-dimethyl-1-(4-((4-nitrobenzylidene)amino)phenyl)pyrano[2,3-c]pyrazol-6(1H)-one (5), 1-(4-(3,4-dimethyl-6-oxopyrano[2,3-c]pyrazol-1(6H)-yl)phenyl)-3-(naphthalen-1-yl)urea (6), (Z)-ethyl 4-((3,4-dimethyl-6-oxo-1,6-dihydropyrano[2,3-c]pyrazol-5-yl)diazenyl)benzoate (8) and 3,4-dimethyl-N-(naphthalen-1-yl)-6-oxopyrano[2,3-c]pyrazole-1(6H)-carboxamide (9) were synthesized and characterized by means of their UV-VIS, FT-IR, 1H-NMR and 13C-NMR spectral data. Density Functional Theory calculations of the synthesized pyranopyrazoles were performed using molecular structures with optimized geometries. Molecular orbital calculations have provided detail description of the orbitals, including spatial characteristics, nodal patterns, and the contributions of individual atoms.
一系列吡喃吡唑,即 7-(2-氨基乙基)-3,4-二甲基-1-苯基-1H-吡唑并[3,4-b]吡啶-6(7H)-酮 (2)、(Z)-3、4-二甲基-1-(4-((4-硝基亚苄基)氨基)苯基)吡喃并[2,3-c]吡唑-6(1H)-酮 (5)、1-(4-(3,4-二甲基-6-氧代吡喃并[2,3-c]吡唑-1(6H)-基)苯基)-3-(萘-1-基)脲 (6)、(Z)-4-((3,4-二甲基-6-氧代-1,6-二氢吡喃并[2,3-c]吡唑-5-基)偶氮)苯甲酸乙酯 (8) 和 3,4-二甲基-N-(萘-1-基)-6-氧代吡喃并[2、3-c]吡唑-1(6H)-甲酰胺(9)的合成,并通过其紫外-可见光谱、傅立叶变换红外光谱、1H-NMR 和 13C-NMR 光谱数据对其进行了表征。使用优化几何结构的分子结构对合成的吡喃吡唑进行了密度泛函理论计算。分子轨道计算提供了轨道的详细描述,包括空间特征、节点模式和单个原子的贡献。