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Nickel versus Palladium in Cross-Coupling Catalysis: On the Role of Substrate Coordination to Zerovalent Metal Complexes
Synthesis ( IF 2.6 ) Pub Date : 2019-12-19 , DOI: 10.1055/s-0039-1690045
Alasdair K. Cooper 1 , Paul M. Burton 2 , David J. Nelson 1
Affiliation  

A detailed comparison of the effect of coordinating functional groups on the performance of 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 from a slight improvement in yield to the complete cessation of the reaction. In contrast, palladium does not interact sufficiently strongly with these functional groups to induce selectivity in cross-coupling reactions; the selectivity of palladium-catalysed cross-coupling reactions is predominantly governed by aryl halide electronic properties.

中文翻译:

镍与钯在交叉偶联催化中的关系:底物配位对零价金属络合物的作用

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。
更新日期:2019-12-20
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