TY - JOUR
T1 - Ring-expanded N-heterocyclic carbene (reNHC) complexes
T2 - Applications in transition metal catalysis
AU - Zhou, Tongliang
AU - Utecht-Jarzyńska, Greta
AU - Szostak, Michal
N1 - Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2024/8
Y1 - 2024/8
N2 - In the past two decades, NHCs (NHC = N-heterocyclic carbenes) have emerged as one of the most important classes of ligands in transition metal catalysis. Although historically 5-membered carbenes, such as imidazol-2-ylidenes, have been the dominant class of NHC ligands in transition metal catalysis, recently, ring expanded carbenes on 6-, 7-, 8-, 9- and 10-membered ring systems have been shown to provide significant advantages in numerous catalytic reactions embracing various metals, transformations and mechanisms. In this comprehensive review, we provide a survey of the applications of ring-expanded N-heterocyclic carbenes (reNHCs) in transition metal catalysis. Spanning from the initial reports on ring-expanded NHCs through June 2023, the review centers on the types of ring-expanded NHCs, their organometallic complexes and applications in catalytic processes. By delving into the impact of ring-expanded NHC ligands, the review aims to provide the reader with an understanding of the significance of this ligand class and its pivotal role in transition metal catalysis and organometallic chemistry.
AB - In the past two decades, NHCs (NHC = N-heterocyclic carbenes) have emerged as one of the most important classes of ligands in transition metal catalysis. Although historically 5-membered carbenes, such as imidazol-2-ylidenes, have been the dominant class of NHC ligands in transition metal catalysis, recently, ring expanded carbenes on 6-, 7-, 8-, 9- and 10-membered ring systems have been shown to provide significant advantages in numerous catalytic reactions embracing various metals, transformations and mechanisms. In this comprehensive review, we provide a survey of the applications of ring-expanded N-heterocyclic carbenes (reNHCs) in transition metal catalysis. Spanning from the initial reports on ring-expanded NHCs through June 2023, the review centers on the types of ring-expanded NHCs, their organometallic complexes and applications in catalytic processes. By delving into the impact of ring-expanded NHC ligands, the review aims to provide the reader with an understanding of the significance of this ligand class and its pivotal role in transition metal catalysis and organometallic chemistry.
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U2 - 10.1016/j.ccr.2024.215867
DO - 10.1016/j.ccr.2024.215867
M3 - Review article
AN - SCOPUS:85191322764
SN - 0010-8545
VL - 512
JO - Coordination Chemistry Reviews
JF - Coordination Chemistry Reviews
M1 - 215867
ER -