Di-tert-butylphosphinylferrocene is primarily used in the field of catalysis, particularly in asymmetric synthesis. It serves as a ligand in transition metal-catalyzed reactions, enhancing the efficiency and selectivity of processes such as hydrogenation, cross-coupling, and polymerization. Its unique ferrocene backbone and phosphinyl group contribute to its stability and reactivity, making it valuable in producing chiral compounds for pharmaceuticals and fine chemicals. Additionally, it is employed in material science for developing advanced polymers and coatings with tailored properties. Its application extends to research and development, where it aids in exploring new catalytic pathways and optimizing industrial chemical processes.