Potassium Phosphate, Tribasic → (4-Benzyloxy-6-fluoro-1-methyl-naphthalen-2-yl)-acetic acid methyl ester

Participants

Reaction Conditions

Reaction Steps

To a solution of (4-benzyloxy-1-bromo-6-fluoro-naphthalen-2-yl)-acetic acid methyl ester (100 mg, 0.248 mmol, prepared using an analogous procedure to the first step of example 5-1), methylboronic acid (19.3 mg, 0.322 mmol), potassium phosphate (184 mg, 0.868 mmol) and tricyclohexylphosphine (69.4 mg, 0.248 mmol) in toluene (4.0 mL) and water (2 drops) was added palladium acetate (3 mg, 0.0124 mmol) under a nitrogen atmosphere. After being heated under microwave conditions (150° C., 30 minutes), the mixture was cooled to room temperature, then diluted with water (10 mL), and extracted with ethyl acetate (15 mL×2). The combined organic layers were washed with brine (10 mL), dried over sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (10% ethyl acetate in hexanes) to afford (4-benzyloxy-6-fluoro-1-methyl-naphthalen-2-yl)-acetic acid methyl ester (50 mg, 59.5%) as a light yellow solid.

Provenance & Evidence