Used in organic synthesis as an intermediate for pharmaceuticals and bioactive compounds. Its structure allows for selective cross-coupling reactions, making it valuable in the development of drug candidates, particularly in the synthesis of nitrogen-containing heterocycles. Commonly employed in palladium-catalyzed reactions such as Suzuki and Heck couplings to build complex molecules. Also utilized in research settings for the preparation of isoquinoline-based derivatives with potential antitumor, antimicrobial, or central nervous system activity.