3-乙基氨基-2-(4-硝基-苯甲酰基)-丁-2-烯酸苯基酰胺的合成,分离,光谱学和结构特征是通过线性极化红外光谱法(IR-LD)表征的固体为胶体悬浮在向列液晶中。实验性的IR波段分配和结构信息得到了MP2和B3LYP理论水平和6-311 ++ G **基集的量子化学计算的支持。该几何结构的特征在于两个NH ... O = C的分子内氢键,键长为2.589和3.449埃。NHO角度分别为142.1(3)度和125.8(4)度。预测的酰胺片段的跨氧化物构型具有150.6度的扭转NH-C = O角。苯基碎片相互垂直定向,闭合角为92.6度。
A convenient procedure for modification of β-enaminones by α-C-acylation and subsequent acidic cleavage is described. The unsymmetrical β-enamino ketones obtained in this way could be hydrolyzed to provide an entry towards various unsymmetrical 1,3-diketones.
Synthesis, spectroscopic and structural elucidation of 3-ethylamino-2-(4-nitro-benzoyl)-but-2-enoic acid phenylamide
作者:Tsonko M. Kolev、Plamen Angelov
DOI:10.1016/j.saa.2007.05.003
日期:2008.2
3-Ethylamino-2-(4-nitro-benzoyl)-but-2-enoic acidphenylamide is synthesized, isolated, spectroscopical and structural characterized by means of linear-polarized IR-spectroscopy (IR-LD) of oriented solids as a colloidal suspension in nematic liquid crystal. The experimental IR-band assignment and structural information are supported by quantum chemical calculations at MP2 and B3LYP level of theory
3-乙基氨基-2-(4-硝基-苯甲酰基)-丁-2-烯酸苯基酰胺的合成,分离,光谱学和结构特征是通过线性极化红外光谱法(IR-LD)表征的固体为胶体悬浮在向列液晶中。实验性的IR波段分配和结构信息得到了MP2和B3LYP理论水平和6-311 ++ G **基集的量子化学计算的支持。该几何结构的特征在于两个NH ... O = C的分子内氢键,键长为2.589和3.449埃。NHO角度分别为142.1(3)度和125.8(4)度。预测的酰胺片段的跨氧化物构型具有150.6度的扭转NH-C = O角。苯基碎片相互垂直定向,闭合角为92.6度。