Boron tribromide → 2-Fluoro-4-methylsulfonylphenol

Participants

Reaction Steps

To a stirred solution of the product from Step B (480 mg, 2.35 mmol) in dichloromethane (10 mL) was added boron tribromide (12.0 mL, 1.0 M in dichloromethane, 12.0 mmol) at −78° C. The reaction was then allowed to warm to room temperature slowly. After stirring at room temperature for 12 h, the reaction was concentrated under reduced pressure and the residue was purified by flash chromatography (silica gel, 50:50 hexanes/ethyl acetate) to give the desired compound.

Provenance & Evidence