How is [3-(Trifluoromethyl)phenyl]boronic acid (CAS: 1423-26-3) typically synthesized?

[3-(Trifluoromethyl)phenyl]boronic acid (CAS: 1423-26-3) is usually synthesized via a boronation reaction of 3-(trifluoromethyl)phenol with a boronate ester or a boronic acid derivative. The reaction often employs a palladium catalyst and a base such as potassium carbonate. The yield can be up to 90%, and the reaction is selective and efficient.