()-1,2-Bis((2R,5R)-2,5-diethylphospholano)ethane is primarily used as a chiral ligand in asymmetric catalysis, particularly in hydrogenation reactions. Its application is significant in the synthesis of enantiomerically pure compounds, which are crucial in the pharmaceutical industry for producing drugs with high stereochemical purity. This ligand is often employed in the hydrogenation of prochiral olefins, ketones, and imines, enabling the production of chiral intermediates with high enantioselectivity. Additionally, it finds use in academic and industrial research for developing new catalytic processes and optimizing existing ones to achieve better yields and selectivity in asymmetric transformations.