反应详情

To a suspension of sodium hydride (12 g, 0.3 mol, 60% in mineral oil) in 600 ml toluene and 400 ml dimethyl formamide was added 2,6-dihydroxynaphthalene (80 g, 0.5 mol) and the mixture was heated to reflux over a thirty minute period. Benzyl chloride (65 ml, 71.5 g, 0.56 mol) was added dropwise and the mixture was refluxed for 10 hours. After cooling to room temperature, the mixture was washed 6 times with water to remove the dimethyl formamide. The resulting toluene solution was washed twice with 150 ml 0.5N sodium hydroxide to remove unreacted starting material and then with water and dried over anhydrous magnesium sulfate. The magnesium sulfate was removed by filtration and the filtrate was concentrated to 150 ml. The solid which had crystallized was collected by vacuum filtration and washed with a small amount of toluene to yield 2-benzyloxy-6-hydroxynaphthalene.

1. temperaturethe mixture was heated
2. temperatureto reflux over a thirty minute period
3. temperaturethe mixture was refluxed for 10 hours
4. washthe mixture was washed 6 times with water
5. customto remove the dimethyl formamide
6. washThe resulting toluene solution was washed twice with 150 ml 0.5N sodium hydroxide
7. customto remove unreacted
8. dry with materialwith water and dried over anhydrous magnesium sulfate
9. customThe magnesium sulfate was removed by filtration
10. concentrationthe filtrate was concentrated to 150 ml
11. customThe solid which had crystallized
12. filtrationwas collected by vacuum filtration
13. washwashed with a small amount of toluene