N Heterocyclic Carbene Complexes in C H Activation Reactions.
In this contribution, we provide a comprehensive overview of C H activation methods promoted by NHC transition metal complexes, covering the literature since 2002 (the year of the first report on metal NHC catalyzed C H activation) through June 2019, focusing on both NHC ligands and C H activation methods. This review covers C H activation reactions catalyzed by group 8 to 11 NHC metal complexes. Through discussing the role of NHC ligands in promoting challenging C H activation methods, the reader is provided with an overview of this important area and its crucial role in forging carbon carbon and carbon heteroatom bonds by directly engaging ubiquitous C H bonds.
Chemical reviews