反应详情

温度

3.5 °C

6-Benzyloxy-2-bromo-3,4-dihydro-2H-naphthalen-1-one (32.9 g, 0.0964 mol) was dissolved in ether (200 mL, 2 mol) and methanol (30.0 mL, 0.740 mol), cooled with ice bath to internal temperature of 3° C. Sodium tetrahydroborate (1.82 g, 0.0482 mol) was added portionwise over 15 min at 3° C.-8° C. (internal). The mixture was stirred at 2-5° C. for 1 hour. Acetic acid (2.74 mL, 0.0482 mol) was added and the mixture was quenched with water, extracted with EtOAc (100 mL), washed with water (2×), brine, dried over anhydrous sodium sulfate, filtered, and concentrated to give a crude intermediate, 6-(benzyloxy)-2-bromo-1,2,3,4-tetrahydronaphthalen-1-ol (29.5 g).

1. customthe mixture was quenched with water
2. extractionextracted with EtOAc (100 mL)
3. washwashed with water (2×), brine
4. dry with materialdried over anhydrous sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated