Carbonylative Coupling of Alkyl Zinc Reagents with Benzyl Bromides Catalyzed by a Nickel/NN
<sub>2</sub>
Pincer Ligand Complex
作者:Thomas L. Andersen、Aske S. Donslund、Karoline T. Neumann、Troels Skrydstrup
DOI:10.1002/anie.201710089
日期:2018.1.15
An efficient catalytic protocol for the three‐component assembly of benzyl bromides, carbon monoxide, and alkyl zinc reagents to give benzyl alkyl ketones is described, and represents the first nickel‐catalyzed carbonylative coupling of two sp3‐carbon fragments. The method, which relies on the application of nickel complexed with an NN2‐type pincer ligand and a controlled release of CO gas from a solid
描述了一种高效的催化方案,用于三组分组装苄基溴,一氧化碳和烷基锌试剂,得到苄基烷基酮,它代表了两个sp 3-碳片段的第一个镍催化的羰基化偶联。该方法依赖于将镍与NN 2型钳形配位体配合使用,以及从固体前体中控制释放CO气体的方法,适用于一系列苄基溴化物。机理研究表明,以碳为中心的自由基是中间的。