Chiral Sulfoxide Ligands in Asymmetric Allylic Substitution

Abstract Chiral nitrogen‐, and phosphorus‐based ligands have been extensively investigated in the asymmetric allylic reactions. However, chiral sulfoxides have not been deemed as a class of practical chiral ligands until last decade, despite several distinct advantages over traditional ligand scaffolds, such as the proximity of the chiral information to the metal center and the ability to switch between S and O coordination. This perspective collects the recent development of chiral sulfoxide ligands for asymmetric allylation since the beginning of 2013. In addition, insights into the future development of this type of promising ligand are discussed.