tert-Butyldiphenylsilane is an organosilicon compound utilized in organic synthesis, primarily as a reagent for hydrosilylation reactions. The Si-H functionality enables addition across carbon-carbon multiple bonds, such as alkenes and alkynes, typically under transition metal catalysis (e.g., platinum or rhodium complexes), to form C-Si bonds that serve as handles for subsequent transformations. Its sterically hindered structure, featuring a tert-butyl group and two phenyl substituents, enhances selectivity, solubility in non-polar solvents, and stability. Additionally, it finds applications in the preparation of silicone polymers, as a mild reducing agent in silane-mediated processes, and in the synthesis of advanced materials like siloxane-based compounds.