How is (4-Formyl-1-naphthyl)boronic acid (CAS: 332398-52-4) typically synthesized?

(4-Formyl-1-naphthyl)boronic acid is often prepared via a condensation reaction between 1-naphthylboronic acid and formaldehyde, followed by a reduction step to form the boronic acid. This synthesis typically involves the use of a suitable reducing agent like sodium borohydride to achieve the desired product. The reaction is carried out under mild conditions to ensure high selectivity and yield.