Evidence for “cocktail”-type catalysis in Buchwald–Hartwig reaction. A mechanistic study
作者:Darya O. Prima、Malena Madiyeva、Julia V. Burykina、Mikhail E. Minyaev、Daniil A. Boiko、Valentine P. Ananikov
DOI:10.1039/d1cy01601f
日期:——
The mechanism of the C–N cross-coupling reaction, catalyzed by palladium complexes with N-heterocyclic carbene ligands (Pd/NHC), was evaluated in detail at the molecular and nanoscale levels. For the first time, the formation of a “cocktail”-type catalytic system was proven for the Buchwald–Hartwig reaction. The unique ability of the Pd/NHC system to generate several types of catalytic centers (Pd
在分子和纳米尺度上详细评估了由钯配合物与 N-杂环卡宾配体 (Pd/NHC) 催化的 C-N 交叉偶联反应的机制。首次证明了 Buchwald-Hartwig 反应形成了“鸡尾酒”型催化体系。Pd/NHC 系统产生多种类型催化中心(Pd 复合物、簇和纳米粒子)的独特能力以及互补途径(均质和异质)的参与被发现以“一锅”方式直接发生在反应容器。从单一且容易获得的 Pd/NHC 复合物访问各种催化中心是设计具有自适应调节能力的通用催化系统的关键。