(DHQ)2PHAL is widely used as a chiral ligand in asymmetric synthesis, particularly in enantioselective reactions. It plays a crucial role in catalyzing transformations such as the Sharpless asymmetric dihydroxylation, which converts alkenes into chiral diols with high enantioselectivity. This makes it valuable in the pharmaceutical industry for synthesizing enantiomerically pure compounds, which are essential for developing drugs with specific biological activities. Additionally, it is employed in academic research to explore new methodologies for creating complex chiral molecules, contributing to advancements in organic chemistry and material science.