Used as a boronic ester reagent in Suzuki-Miyaura cross-coupling reactions to form carbon-carbon bonds in organic synthesis. It serves as a stable and selective boron-containing partner for palladium-catalyzed coupling with aryl or vinyl halides, enabling the construction of biaryl frameworks common in pharmaceuticals and functional materials. The 3-bromophenyl group allows for further functionalization, while the dimethyl dioxaborinane ring enhances stability and reactivity profile compared to simple boronic acids.