Used primarily in organic synthesis as a key intermediate for the preparation of various phosphorus-containing compounds. It plays a significant role in the development of ligands for catalytic systems, particularly in asymmetric catalysis, where it helps in creating chiral environments essential for producing enantiomerically pure substances. Additionally, it is employed in the synthesis of flame retardants and agrochemicals, contributing to enhanced safety and efficiency in these applications. Its reactivity with nucleophiles also makes it valuable in modifying polymers and other materials to achieve desired physical and chemical properties.