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首页> 外文期刊>Journal of structural chemistry >A Theoretical Investigation on the Regioselectivity of the Diels-Alder Cycloaddition of 9-(Methoxymethyl) Anthracene And Citraconic Anhydride
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A Theoretical Investigation on the Regioselectivity of the Diels-Alder Cycloaddition of 9-(Methoxymethyl) Anthracene And Citraconic Anhydride

机译:Diels-Alder环加成的区域选择性的理论研究9-(甲氧基甲基)蒽酸酐和亚硝基酸酐

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摘要

The mechanism and regioselectivity of the Diels-Alder cycloaddition reaction between 9- (methoxymethyl)anthracene and citraconic anhydride are explored using the valuable density functional theory (DFT) methods. The solvent effects are considered using the polarizable continuum model in the toluene solution. Due to a small electrophilicity difference of the reactants, the reaction has a low polar character. The investigated Diels-Alder reaction has a normal electron demand character. Depending on the respective position of substituents in the cycloadducts (head-to-head (ortho) or head-to-tail (meta)) the reaction can be progressed via two different pathways: ortho and meta. Due to a very high activation energy, the meta pathway is rejected. The product of the ortho pathway is demonstrated to be the final product of the reaction in the toluene solution. The obtained DFT results are in good agreement with the experimental results.
机译:利用宝贵的密度泛函理论(DFT)方法探索了9-(甲氧基甲基)蒽和柠檬咯酸酐与柠铬酐之间的DIELS-桤木环加入反应的机理和区域。 使用甲苯溶液中的可极化连续体模型考虑溶剂效应。 由于反应物的小型电泳差异,反应具有低极性特征。 研究的Diels-Alder反应具有正常的电子需求特征。 取决于环形进程中取代基的各个位置(头部到头(邻孔)或头部到尾部(META))可以通过两种不同的途径进行反应:邻和元。 由于具有非常高的激活能量,所以拒绝元途径。 邻途途径的产物被证明是甲苯溶液中反应的最终产物。 获得的DFT结果与实验结果吻合良好。

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