Allyldiphenylphosphine is widely used as a ligand in coordination chemistry, particularly in the synthesis of transition metal complexes. These complexes are essential in various catalytic processes, including hydrogenation, hydroformylation, and polymerization reactions. Its role as a ligand enhances the stability and reactivity of the metal center, making it valuable in industrial and academic research. Additionally, it is employed in organic synthesis for the formation of carbon-phosphorus bonds, which are crucial in the development of pharmaceuticals, agrochemicals, and advanced materials. Its versatility and effectiveness in these applications make it a significant compound in both catalytic and synthetic chemistry.