Tropolonate Salts as Acyl-Transfer Catalysts under Thermal and Photochemical Conditions: Reaction Scope and Mechanistic Insights
作者:Demelza J. M. Lyons、Claire Empel、Domenic P. Pace、An H. Dinh、Binh Khanh Mai、Rene M. Koenigs、Thanh Vinh Nguyen
DOI:10.1021/acscatal.0c03702
日期:2020.11.6
strong nucleophilicity and photochemical activity, can promote the coupling reaction between alcohols and carboxylic acid anhydrides or chlorides to give products under thermal or blue light photochemical conditions. Kinetic studies and density functional theory calculations suggest interesting mechanistic insights for reactions promoted by this acyl-transfer catalytic system.
酰基转移催化是促进羧酸衍生物形成的常用工具,羧酸衍生物是有机合成中重要的合成前体和目标化合物。但是,已知只有少数结构性基序可以有效催化酰基转移反应。在本文中,我们介绍了基于托酚酮骨架的不同的酰基转移催化范式。我们显示,对羟基苯甲酸酯盐由于其强大的亲核性和光化学活性,可以促进醇与羧酸酐或氯化物之间的偶联反应,从而在热或蓝光光化学条件下产生产物。动力学研究和密度泛函理论计算表明,该酰基转移催化体系促进了反应的有趣机理。