Used in organic synthesis as an intermediate for pharmaceuticals and agrochemicals. Serves as a building block in the development of kinase inhibitors and other biologically active compounds. Commonly employed in cross-coupling reactions, such as Suzuki and Heck reactions, to construct complex quinoline derivatives. Applied in materials science for designing electron-transport materials and fluorescent probes. Also investigated for potential antitumor and antimicrobial activities due to the bioactive nature of halogenated quinolines.