Used as a key intermediate in Suzuki-Miyaura cross-coupling reactions, enabling the synthesis of complex quinoline derivatives with high efficiency and selectivity. Its boronic ester group provides enhanced stability and reactivity, making it valuable in pharmaceutical and agrochemical research for constructing biaryl systems. Commonly employed in the development of bioactive molecules, including kinase inhibitors and fluorescent probes. Also applied in materials science for designing organic semiconductors and luminescent compounds.