How is 2-Butoxyphenylboronic acid (CAS: 91129-69-0) typically synthesized?

2-Butoxyphenylboronic acid is typically synthesized via the boronic acid pinacol ester method. The process involves the reaction of 2-butoxyphenol with boron tribromide in the presence of a base. The reaction yields a mixture of isomers, and purification is usually achieved through column chromatography. The yield is around 85%, and the reaction is carried out under anhydrous conditions to ensure high purity.