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Synthesis and Crystal Structure Analysis of Substituted Diethyl Malonate

机译:取代丙二酸二乙酯的合成及晶体结构分析

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As intermediates of light stabilizer malonate, diethyl 3,5-di-t-butyl-4-hydroxybenzyl phenyl malonates (F.W. 454.58) was synthesized, characterized by 1 H NMR, element analysis and confirmed by X-ray crystal structure analysis. This compound crystallizes in monoclinic class under the space group P21/c with cell parameters, a = 9.8218(4) ?, b = 13.5571(5) ?, c = 19.7233(8) ?; β = 102.3530(10)°, and Z = 4. The structure exhibits inter-molecular hydrogen bonds of the type O-H-O, leading to the formation of one dimensional chains. Graphical abstract Substituted diethyl malonate was synthesized by radical and nucleophilic substitution reaction of malonic esters using 3,5-di-t-butyl-4-hydroxy toluene and diethyl 2-phenylmalonates as raw material, the product's crystal structure was determined
机译:作为光稳定剂丙二酸酯的中间体,合成了3,5-二叔丁基-4-羟基苄基苯基丙二酸二乙酯(F.W. 454.58),通过1 H NMR,元素分析和通过X射线晶体结构分析证实。该化合物在P21 / c空间群下以单元参数a.9.8218(4),b = 13.5571(5),c = 19.7233(8)。 β= 102.3530(10)°,Z =4。该结构显示O-H-O型分子间氢键,导致形成一维链。以3,5-二叔丁基-4-羟基甲苯和2-苯基丙二酸二乙酯为原料,通过丙二酸酯的自由基和亲核取代反应合成了取代的丙二酸二乙酯。

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