反应详情

50% Sodium hydride (5.77 g; 120 mmol) is washed with n-hexane, and dimethylformamide (50 ml) is added thereto. To the resultant mixture, 3-hydroxymethylcyclohexanol (9) (10.0 g; 76.8 mmol) is dropwise added under ice-cooling, and then benzyl bromide (13.15 g; 76.8 mmol) is dropwise added thereto under ice-cooling. The resulting mixture is stirred at a temperature of 0° to 10° C. for 5 hours. The reaction mixture is poured into ice-water, extracted with toluene. The organic layer is washed with water, dried and concentrated under reduced pressure. The residue is chromatographed on a silica gel column to give 3-benzyloxymethylcyclohexanol (10) (9.55 g).

1. additionis added
2. temperaturecooling
3. temperatureunder ice-cooling
4. extractionextracted with toluene
5. washThe organic layer is washed with water
6. customdried
7. concentrationconcentrated under reduced pressure
8. customThe residue is chromatographed on a silica gel column