Nickel versus Palladium in Cross-Coupling Catalysis: On the Role of Substrate Coordination to Zerovalent Metal Complexes
作者:Alasdair K. Cooper、Paul M. Burton、David J. Nelson
DOI:10.1055/s-0039-1690045
日期:2020.2
Suzuki–Miyaura reactions catalysed by nickel and palladium is reported, using competition experiments, robustness screening, and density functional theory calculations. Nickel can interact with a variety of functional groups, which manifests as selectivity in competitive cross-coupling reactions. The presence of these functional groups on exogenous additives has effects on cross-coupling reactions that range
报道了使用竞争实验,鲁棒性筛选和密度泛函理论计算,比较了官能团对镍和钯催化的铃木-宫浦反应性能的影响的详细比较。镍可以与各种官能团相互作用,这在竞争性交叉偶联反应中表现为选择性。这些官能团在外源性添加剂上的存在对交叉偶联反应有影响,其范围从收率的轻微提高到反应完全停止。相比之下,钯与这些官能团的相互作用不足以引起交叉偶联反应的选择性。钯催化的交叉偶联反应的选择性主要由芳基卤化物的电子性质决定。