One pot synthesis, molecular structure and spectroscopic studies (X-ray, IR, NMR, UV–Vis) of novel 2-(4,6-dimethoxy-1,3,5-triazin-2-yl) amino acid ester derivatives
作者:Ayman El-Faham、Saied M. Soliman、Sameh M. Osman、Hazem A. Ghabbour、Mohammed R.H. Siddiqui、Hoong-Kun Fun、Fernando Albericio
DOI:10.1016/j.saa.2016.01.051
日期:2016.4
5-triazin-2-yl) amino acid ester derivatives were synthesized using simple one pot method in methanol. The products were obtained in high yields and purities as observed from their spectral data, elemental analyses, GC–MS and X-ray crystallographic analysis. The B3LYP/6-311G(d,p) calculated molecular structures are well correlated with the geometrical parameters obtained from the X-ray analyses. The spectroscopic
使用简单的一锅法在甲醇中合成了新型的2-(4,6-二甲氧基,1,3,5-三嗪-2-基)氨基酸酯衍生物。从其光谱数据,元素分析,GC-MS和X射线晶体学分析中观察到,该产品以高收率和高纯度获得。B3LYP / 6-311G(d,p)计算出的分子结构与从X射线分析获得的几何参数具有良好的相关性。通过实验和理论讨论了诸如红外振动模式,核磁共振化学位移和紫外可见电子跃迁等光谱性质。红外振动频率与实验数据具有良好的相关性(R 2 = 0.9961–0.9995)。根据TD-DFT结果分配电子光谱。对于化合物6a–i,计算得出的强电子跃迁谱带分别为198.1 nm(f = 0.1389),204.2 nm(f = 0.2053),205.0(f = 0.1704)和205.7(0.2971)。解释了在最长的波长跃迁带中贡献的分子轨道能级。对于所有化合物,由于溶剂效应,与计算相比,实验波长显示出红移。使