How is (6-Bromo-2,3-difluorophenyl)boronic acid (CAS: 870718-10-8) typically synthesized?

(6-Bromo-2,3-difluorophenyl)boronic acid can be synthesized by the Finkelstein method, where 2,3-difluorobromobenzene is treated with sodium hydride and then boron tribromide. This process yields high selectivity and good yield (up to 85%). The method requires careful handling to maintain high purity and requires the use of anhydrous conditions to prevent hydrolysis. The reaction is typically carried out in dimethylformamide (DMF) solvent.