1-(4-chlorophenyl)-2,2,2-trifluoroethanol

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1-(4-Chlorophenyl)-2,2,2-trifluoroethanol (1.20 g, 5.70 mmol) was dissolved in diethyl ether (80 mL), and the resulting solution was cooled to 0° C. Then, 63% sodium hydride (217 mg, 5.70 mmol) was added thereto, and the resulting mixture was stirred for 1 hour. Thereafter, trifluoromethanesulfonyl chloride (0.910 mL, 8.55 mmol) was added dropwise thereto. Then, the temperature of the reaction solution was raised to room temperature, and the reaction solution was stirred for 2 hours. Water was added to the reaction solution, and the organic matter was extracted with ethyl acetate. The organic layer was washed with water and a saturated sodium chloride solution, then dried over anhydrous magnesium sulfate and filtered. Then, the solvent was distilled off under reduced pressure, whereby a crude product was obtained. This crude product was purified by silica gel column chromatography (hexane:ethyl acetate=100:0 to 93:7 (v/v)), whereby the objective title compound was obtained as a colorless oily substance (495 mg, yield: 25%). Then, the temperature of the reaction solution was raised to room temperature the reaction solution was stirred for 2 hours the organic matter was extracted with ethyl acetate The organic layer was washed with water a saturated sodium chloride solution, then dried over anhydrous magnesium sulfate filtered Then, the solvent was distilled off under reduced pressure, whereby a crude product was obtained This crude product was purified by silica gel column chromatography (hexane:ethyl acetate=100:0 to 93:7 (v/v)), whereby the objective title compound was obtained as a colorless oily substance (495 mg, yield: 25%)