Used as a coupling reagent in Suzuki-Miyaura cross-coupling reactions, enabling the formation of carbon-carbon bonds in pharmaceutical and agrochemical synthesis. Its boron-based structure offers enhanced stability and reactivity with aryl halides, making it valuable for constructing biaryl compounds. The butylphenyl group helps modulate electronic and steric properties, improving selectivity in complex molecule assembly. Commonly applied in late-stage functionalization during drug development.