Used as a key intermediate in Suzuki-Miyaura cross-coupling reactions, enabling the formation of carbon-carbon bonds in pharmaceutical and agrochemical synthesis. Its boronate ester group facilitates palladium-catalyzed coupling with aryl halides under mild conditions, making it valuable in the preparation of complex organic molecules. Additionally, the phosphine oxide moiety can act as a directing group or be further modified in multi-step syntheses. Commonly applied in the development of functional materials, including organic light-emitting diodes (OLEDs) and conjugated polymers.