How is (3,5-Difluoro-4-formylphenyl)boronic acid (CAS: 870718-11-9) typically synthesized?

(3,5-Difluoro-4-formylphenyl)boronic acid is usually synthesized through the bromination of 3,5-difluorophenol followed by the addition of boron tribromide and subsequent hydrolysis. This method provides good yield and selectivity. Alternative routes involve the use of other reagents like boronic acids or esters, depending on the desired purity and reactivity of the final product.