Ligand-Controlled Regiodivergent Palladium-Catalyzed Hydrogermylation of Ynamides
作者:Vincent Debrauwer、Aneta Turlik、Lénaic Rummler、Alessandro Prescimone、Nicolas Blanchard、K. N. Houk、Vincent Bizet
DOI:10.1021/jacs.0c03556
日期:2020.6.24
Ynamides are fascinating small molecules with complementary reactivities under radical, ionic and metal-catalyzed conditions. We report herein synthetic and DFT investigations of palladium-catalyzed ligand-controlled regiodivergent hydrometallation reactions of ynamides. Germylated and stannylated enamides are obtained with excellent α,E- or β,E-selectivities and a broad functional group tolerance
炔胺是迷人的小分子,在自由基、离子和金属催化条件下具有互补的反应性。我们在此报告了钯催化配体控制区域发散性氢化金属化反应的合成和 DFT 研究。获得了具有优异的 α,E- 或 β,E-选择性和广泛的官能团耐受性的胚芽化和甲硅烷基化的烯酰胺。这种区域发散的钯催化过程在 ynamide 化学中是独一无二的,并允许精心设计金属化的 enamides,这是非常有用的交叉偶联反应或杂环化学的构建块。DFT 计算完全支持实验数据,并证明了 [H-Pd(L)-Ge] 复合物的跨几何以及膦配体的空间要求的关键作用。此外,