Effect of Precatalyst Oxidation State in C–N Cross-Couplings with 2-Phosphinoimidazole-Derived Bimetallic Pd(I) and Pd(II) Complexes
Effect of Precatalyst Oxidation State in C–N Cross-Couplings with 2-Phosphinoimidazole-Derived Bimetallic Pd(I) and Pd(II) Complexes
复制标题
预催化剂氧化态对 2-膦基咪唑衍生双金属 Pd(I) 和 Pd(II) 配合物 C−N 交叉偶联的影响
DOI:
10.1021/acs.organomet.1c00315
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发表时间:
2021
期刊:
影响因子:
2.8
通讯作者:
Michaelis, David J.
中科院分区:
文献类型:
--
作者:
Martinez, Erin E.;Moreno, Mariur Rodriguez;Barksdale, Caleb A.;Michaelis, David J.
We report the catalytic activity of two phosphinoimidazole-derived bimetallic palladium complexes in Pd-catalyzed amination reactions. Our studies demonstrate that the starting oxidation state (Pd(I) or Pd(II)) of the dimeric complex has a significant effect on the efficiency of the catalytic reaction. The corresponding Pd(I) complex shows higher reactivity in Buchwald–Hartwig aminations, while the Pd(II) complex is much more reactive in carbonylative amination reactions. These new dimeric palladium complexes provide good to excellent reactivity and yields in the amination reactions tested.
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