Palladium-Catalyzed<i>ortho</i>-Selective CH Deuteration of Arenes: Evidence for Superior Reactivity of Weakly Coordinated Palladacycles
作者:Sandy Ma、Giorgio Villa、Peter S. Thuy-Boun、Anna Homs、Jin-Quan Yu
DOI:10.1002/anie.201305388
日期:2014.1.13
are suitable substrates for this reaction. This reaction offers a catalytic route to ortho‐deuterated phenylacetic acids and benzoic acids and demonstrates the sharp difference in reactivity of palladacycleintermediates held together by weak and strong coordination.
我们公开了芳烃的钯催化邻位选择性C de H氘代反应的协议。苯乙酸和苯甲酸是该反应的合适底物。这种反应提供催化路线邻-deuterated苯乙酸和苯甲酸并演示了由弱和强协调在一起的钯中间体的反应性的巨大差异。
A Protocol for the <i>Ortho</i>-Deuteration of Acidic Aromatic Compounds in D<sub>2</sub>O Catalyzed by Cationic Rh<sup>III</sup>
作者:Alyssa L. Garreau、Hanyang Zhou、Michael C. Young
DOI:10.1021/acs.orglett.9b02618
日期:2019.9.6
catalytically introduce deuterium in synthetically useful yields ortho to a carboxylic acid directing group on arenes typically requires D2 or high catalyst loadings, which makes using these approaches cost prohibitive for large-scale synthesis (equipment and reagent costs respectively). Herein, we present a simplified approach using low catalyst loadings of cationic RhIII and D2O as both deuterium source and solvent