Palladium, iridium, and rhodium complexes bearing chiral <i>N</i>‐heterocyclic carbene ligands applied in asymmetric catalysis

The field of asymmetric catalysis is rapidly developing and the chiral ligands play a key role in enantioselective transition‐metal catalysis. electron‐rich N ‐heterocyclic carbenes (NHCs) have established themselves as popular class stereodirecting ancillary to catalyze organic transformations more efficient ways. Several novel complexes combination with tailored ligand design emerged during last few decades tailor‐made NHCs can easily be accessed due modular synthesis their parent azolium salt precursors. Their donor capability molecular shape tuned by changing substituent at N‐atom or cyclic backbone framework. This review article aims describe recent advances this evolving research area using well‐defined possessing NHC ligands.