Triisopropyl borate → (2,6-Dimethylpyridin-4-yl)boronic acid

Participants

Reaction Steps

4-Bromo-2,6-dimethyl-pyridine (910 mg, 4.9 mmol) and triisopropyl borate (2.3 mL, 10 mmol) in THF (10 mL) were cooled in a −78° C. bath. BuLi (2.7 M, 7 mL) was added in drop wise. After 3 hrs, the bath was removed. The reaction was acidified with 1N HCl till pH=1. The separated aqueous layer was neutralized with NaOH and subsequently extracted with ethyl acetate. A crude white solid was obtained (800 mg) as the title compound.

Provenance & Evidence