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Updated: May 15, 2025

Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes

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内分子与分子间的迪尔斯-阿尔德反应:从分子电子密度理论的见解

Luis R Domingo¹, Patricia Pérez²

¹Independent Researcher, Av. Tirso de Molina 20, 46015 Valencia, Spain.

Molecules (Basel, Switzerland)

|May 14, 2025

概括

内分子迪尔斯-阿尔德反应在电子和能量方面与分子间反应非常相似. 然而,不利的激活使分子内反应显著加快.

科学领域:

有机化学有机化学
计算化学计算化学
化学动力学化学动力学

背景情况:

迪尔斯-阿尔德反应是有机合成中的基本循环添加反应.
内分子变体 (IMDA) 提供独特的合成优势,但需要详细的机制理解.
分子电子密度理论 (MEDT) 为分析反应机制提供了一个强大的框架.

研究的目的:

研究分子内迪尔斯-阿尔德反应 (IMDA) 和分子间迪尔斯-阿尔德反应之间的电子和能量相似性.
分析替代剂和激活模式对IMDA反应通路的影响.
阐明控制IMDA和分子间过程之间的速率差异的因素.

主要方法:

利用分子电子密度理论 (MEDT) 进行理论分析.
进行了电子密度的拓分析.
基于使用密度函数理论 (DFT) 的反应率指数和相对相互作用原子能 (RIAE) 分析.

主要成果:

与分子间过程相比,替代剂不会改变电子结构或反应性.
IMDA过渡状态的电子和能量概况反映了分子间反应的电子和能量概况.
电友框架的稳定和核友框架的不稳定降低了激活能量.

结论:

MEDT证实了分子间和分子内迪尔斯-阿尔德反应之间的显著电子和能量平行.
显著更快的IMDA反应速度归因于较低,不利的激活.
这项研究加深了对控制迪尔斯-阿尔德反应动态的因素的理解.

关键词:

基于 DFT 的反应性指数.化学反应性化学反应性电子定位功能的电子定位功能.分子内反应迪尔斯老年反应分子电子密度理论分子电子密度理论相对相互作用的原子能量.

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