Hydrogen Peroxide → 5-Bromo-2-methoxyphenol

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-bromo-2 methoxybenzaldehyde (32.25 g, 0.15 mol) in methanol (300 ml) was added hydrogen peroxide (38 ml of 30% aqueous solution, 0.34 mol) and concentrated sulfuric acid (7 ml, 0.13 mol). The resulting solution was heated at 70° C. for 3 hr. and allowed to cool to room temperature. Stirring was continued for 60 hr. and the reaction mixture was concentrated under reduce pressure. The residue was partitioned between ether and water and the organic extract was washed with slightly acidic water (three times) and dried (magnesium sulfate). The solvent was removed in vacuo to provide an orange solid (30.6 g) which was used without further purification.

Provenance & Evidence