Used as a chiral ligand in asymmetric catalysis, particularly in enantioselective organic transformations such as hydrogenation and transfer hydrogenation reactions. Its rigid biimidazole backbone and chiral environment enable high stereoselectivity when coordinated with transition metals like ruthenium or rhodium. Commonly employed in the synthesis of chiral amines and alcohols, which are key intermediates in pharmaceuticals and fine chemicals. Also finds use in catalytic systems for the reduction of ketones and imines with high enantiomeric excess. Its structural tunability allows optimization for specific reaction conditions and substrate types.