How is mesitylboronic acid (CAS: 5980-97-2) typically synthesized?

Mesitylboronic acid is usually synthesized through the reaction of mesityl oxide with boron tribromide in the presence of a base. The process involves the generation of a mesityl borate salt, which then forms mesitylboronic acid upon treatment with water or a protic solvent. The reaction is typically carried out in a glass or Teflon vessel to avoid corrosion.