Synthesis of Amides and Esters by Palladium(0)‐Catalyzed Carbonylative C(sp
<sup>3</sup>
)−H Activation
作者:Tomáš Čarný、Ronan Rocaboy、Antonin Clemenceau、Olivier Baudoin
DOI:10.1002/anie.202007922
日期:2020.10.19
The 1,4‐palladium shift strategy allows the functionalization of remote C−H bonds that are difficult to reach directly. Reported here is a domino reaction proceeding by C(sp3)−H activation, 1,4‐palladium shift, and amino‐ or alkoxycarbonylation, which generates a variety of amides and esters bearing a quaternary β‐carbon atom. Mechanistic studies showed that the aminocarbonylation of the σ‐alkylpalladium
1,4-钯转移策略可实现难以直接到达的远程CH键的功能化。此处报道的是发生C(sp 3)-H活化,1,4-钯移位和氨基或烷氧羰基化反应而发生的多米诺反应,该反应生成各种带有季碳原子的酰胺和酯。机理研究表明,使用PPh 3作为配体,由钯转移引起的σ-烷基钯中间体的氨基羰基化反应很快,并生成酰胺,而不是先前报道的茚满酮产物。