The key role of R-NHC coupling (R = C, H, heteroatom) and M-NHC bond cleavage in the evolution of M/NHC complexes and formation of catalytically active species

被引:105
作者
Chernyshev, Victor M. [1 ]
Denisova, Ekaterina A. [2 ]
Eremin, Dmitry B. [2 ,3 ]
Ananikov, Valentine P. [1 ,2 ]
机构
[1] Platov South Russian State Polytech Univ NPI, Prosveschenya 132, Novocherkassk 346428, Russia
[2] Russian Acad Sci, ND Zelinsky Inst Organ Chem, Leninsky Prospect 47, Moscow 119991, Russia
[3] Univ Southern Calif, Bridge USC, 1002 Childs Way, Los Angeles, CA 90089 USA
基金
俄罗斯科学基金会;
关键词
N-HETEROCYCLIC CARBENE; BUCHWALD-HARTWIG AMINATION; TO-ABNORMAL REARRANGEMENT; PD-PEPPSI COMPLEXES; OXIDATIVE ADDITION; SUZUKI-MIYAURA; REDUCTIVE ELIMINATION; MIZOROKI-HECK; METAL-COMPLEXES; PALLADIUM(II) COMPLEXES;
D O I
10.1039/d0sc02629h
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Complexes of metals with N-heterocyclic carbene ligands (M/NHC) are typically considered the systems of choice in homogeneous catalysis due to their stable metal-ligand framework. However, it becomes obvious that even metal species with a strong M-NHC bond can undergo evolution in catalytic systems, and processes of M-NHC bond cleavage are common for different metals and NHC ligands. This review is focused on the main types of the M-NHC bond cleavage reactions and their impact on activity and stability of M/NHC catalytic systems. For the first time, we consider these processes in terms of NHC-connected and NHC-disconnected active species derived from M/NHC precatalysts and classify them as fundamentally different types of catalysts. Problems of rational catalyst design and sustainability issues are discussed in the context of the two different types of M/NHC catalysis mechanisms.
引用
收藏
页码:6957 / 6977
页数:21
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