反应详情

To a mixture of 6-fluoro-4-hydroxy-naphthalene-2-carboxylic acid methyl ester (4.6 g, 21 mmol) and potassium carbonate (5.8 g, 42 mmol), was added benzyl bromide (5.47 mL, 32 mmol) in acetone (100 mL). After being stirred vigorously at reflux for 4 hours under a nitrogen atmosphere, the resulting mixture was cooled to room temperature, filtered, and concentrated in vacuo to give 4-benzyloxy-6-fluoro-naphthalene-2-carboxylic acid methyl ester (5.85 g, 90%) as a white solid.

1. temperatureat reflux for 4 hours under a nitrogen atmosphere
2. filtrationfiltered
3. concentrationconcentrated in vacuo