Domino Knoevenagel/Michael synthesis of 2,2’-arylmethylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexen-1-one) derivatives catalyzed by silica-diphenic acid and their single crystal X-ray analysis
作者:RUPALI VAID、MONIKA GUPTA、RAJNI KANT、VIVEK K GUPTA
DOI:10.1007/s12039-016-1088-y
日期:2016.6
An efficient and eco-friendly procedure has been developed for the synthesis of various 2,2’-arylmethylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) derivatives which were isolated and characterized by melting point, IR, 1H-NMR, 13C-NMR and mass spectrometric techniques. Out of the fourteen compounds synthesized, four compounds yielded crystals suitable for single crystal X-ray analysis which
已开发出一种有效且环保的方法,用于合成各种2,2'-芳基亚甲基双(3-羟基-5,5-二甲基-2-环己烯-1-酮)衍生物,这些衍生物经分离并以熔点为特征, IR,1 H-NMR,13 C-NMR和质谱技术。在合成的14种化合物中,有4种化合物产生的晶体适合单晶X射线分析,表明2,2'-苯基亚甲基双(3-羟基-5,5-二甲基-2-环己烯-1-酮)在其中结晶。空间群为I 4 1 / a的四方体系在空间群为P的单斜晶系中结晶,2,2'-(3-硝基苯基)亚甲基双(3-羟基-5,5-二甲基-2-环己烯-1-一)结晶。2 1 / n,2,2'-(4-硝基苯基)亚甲基双(3-羟基-5,5-二甲基-2-环己烯-1-酮)在正交晶系中以Pca21和2,2'-(4 -氯苯基)亚甲基双(3-羟基-5,5-二甲基-2-环己烯-1-酮)在单斜空间群P21 / c中结晶。 据报道,在研磨过程中,不同的醛类与二甲酮反应,可以有效地合成二氧化硅-二苯甲酸催化的2