2,4-Dichloro-3-(dimethylaminomethylene)-1,4-cyclohexadiene-1,5- dicarboxaldehyde: X-ray structure, mndo calculations, and rotational barriers of a stable non-aromatic tautomer of a penta-substituted benzene
作者:Alan R. Katritzky、Charles H. Marson、Gus Palenik、Anna E. Koziol、Hudson Luce、Mati Karelson、Ban-Chi Chen、Wallace Brey
DOI:10.1016/s0040-4020(01)85953-6
日期:1988.1
isomer of the title compound. Reactions of the title compound were studied, and the structure was confirmed by X-ray crystallography. MNDO calculations give a geometry in agreement with that found, and indicate an energy difference of 13 in favour of the benzenoid isomer . Temperature-dependent 13C- and 1H-NMR spectra afforded rotational barriers.
制备了标题化合物的类似物。反应条件的微小改变得到标题化合物的苯甲酸酯异构体。研究了标题化合物的反应,并通过X射线晶体学确认了结构。MNDO计算得出的几何形状与所发现的几何形状相符,并表明能量差为13 ,有利于该苯并异构体。温度相关的13 C-和1 H-NMR谱图提供了旋转势垒。