Asymmetric catalysis using planar chiral arene chromium complexes

Planar chiral (arene)Cr(CO)₃ complexes are emerging as a valuable and versatile class of ligand for asymmetric catalysis. Development of new approaches to their synthesis, including some which are modular and versatile, and some which provide access to highly attractive complexes such as systems containing elements of tetrahedral, planar and axial chirality, has opened up many new possibilities in this area in the last two or three years. Emerging applications are promising and early results in areas as diverse as asymmetric allylic alkylation, hydrovinylation and hydroamination point to the rich potential of these ligands in asymmetric catalysis.