Photoinduced Homolysis of the Ni–P Bond via Ligand to Metal Charge Transfer for C–P Bond Formation in Nickel Catalysis
作者:Yunpeng Ma、Hang Luo、Luqing Lin
DOI:10.1021/acs.orglett.3c01079
日期:2023.5.19
describe the homolysis of NiII–P bonds via ligand to metal charge transfer to access active nickel(I) complexes and phosphorus-centered radicals under visible-light irradiation for C–P couplings of diaryl phosphine oxides with aryl bromides. Experimental studies demonstrated that visible light enabled homolysis of the NiII–P bond and the NiI/NiIII self-sustained cycle was involved in C–P bond formation
Ni II -碳和 - 杂原子键的光致均裂已针对碳 - 杂原子偶联进行了很好的研究,但 Ni II -P 键的均裂仍未公开。在此,我们描述了 Ni II –P 键通过配体到金属电荷转移的均裂,以在可见光照射下获得活性镍 (I) 配合物和以磷为中心的自由基,用于二芳基膦氧化物与芳基溴化物的 C-P 偶联。实验研究表明,可见光使 Ni II -P 键均裂,而 Ni I /Ni III自持循环参与 C-P 键形成。此外,Ni II的均裂–P键可应用于单镍光催化中[1.1.1]丙烷的氢膦化。