4-Nitrobenzoic Acid → 1-Phenylethanol, (S)-

Participants

Reaction Steps

After (S)-1-phenylethyl alcohol (300 mg, 2.46 mmol), triphenylphosphine (771 mg, 2.95 mmol), 4-nitrobenzoic acid (494 mg, 2.95 mmol), and THF (12 ml) were added to a 50 ml flask, azodicarboxylic acid bis(2-methoxyethyl) ester (691 mg, 2.95 mmol) dissolved in THF (6 ml) was added dropwise thereto at 20° C., and the reaction was allowed to proceed for four hours. Water (0.5 mL) was added, and concentration was carried out. Then, water (10 ml) was added to the solution, and extraction was carried out using diethyl ether (10 ml,×2). Then, the organic layer was washed with water (10 mL) and saturated salt water (10 ml), and dehumidified with anhydrous magnesium sulfate. Subsequently, a crude product obtained by concentration was purified by column chromatography (silica gel, 5% ethyl acetate-hexane solution) to give (R)-1-(4-nitrobenzoyloxy)-1-phenylethane as a pale yellow liquid substance (559 mg, yield: 84%/(S)-1-phenylethyl alcohol).

Provenance & Evidence