Synthesis of (3,6-dihydro-2H-pyran-2-yl)phosphonate derivatives and investigation of catalyst effect on frontier molecular orbitals using DFT method
作者:Md. Shakhawoat Hossain、Sidika Polat Cakir、Gül Altınbaş Özpınar、Said Nadeem、Ayhan S. Demir
DOI:10.1080/10426507.2016.1166502
日期:2016.9.1
phosphonate derivatives were investigated. Aroyl phosphonates with electron-withdrawing groups generally resulted in better isolated chemical yields. A stoichiometric amount of AlCl3 rather than a catalytic amount was necessary to activate the cycloaddition reaction. The amount of AlCl3 catalyst and its effect on LUMO of ethyl ester benzoyl phosphonate were also investigated by performing density functional
图形摘要 摘要 2,3-二甲基-1,3-丁二烯和芳酰基膦酸二乙酯在 AlCl3 催化下发生杂狄尔斯-阿尔德 (HDA) 反应,得到 (3,6-二氢-2H-吡喃-2-基) 膦酸酯衍生品进行了调查。具有吸电子基团的芳酰基膦酸酯通常导致更好的分离化学产率。需要化学计量的 AlCl3 而不是催化量的 AlCl3 来激活环加成反应。还通过在二氯甲烷中进行密度泛函理论 (DFT) (B97D/6-31+G(d,p)) 计算研究了 AlCl3 催化剂的量及其对苯甲酰基膦酸乙酯的 LUMO 的影响。AlCl3 负载量的增加导致苯甲酰膦酸乙酯的 LUMO 能量显着降低。计算出的吉布斯自由激活能为 17。