Used primarily as a reagent in organic synthesis, particularly in the preparation of phosphine ligands for coordination chemistry. It plays a crucial role in the development of catalysts for various chemical reactions, including cross-coupling reactions, which are essential in pharmaceutical and materials science research. Additionally, it is employed in the synthesis of organophosphorus compounds, which have applications in flame retardants, plasticizers, and agrochemicals. Its reactivity with nucleophiles also makes it valuable in creating complex molecular structures for advanced material studies.