反应详情

(1R)-1-(2-bromo-3-methylphenyl)ethanol (2.00 g, 9.30 mmol) obtained in Example 4(4a) and (R)-glycidyl 3-nitrobenzene sulfonic acid (3.13 g, 12.1 mmol) were dissolved in N,N-dimethyl formamide (45 mL), added with sodium hydride (608 mg, content 55%, 14.0 mmol), and stirred at room temperature for 2 hours. The reaction solution was added with water and extracted with ethyl acetate. After that, the organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (n-hexane/ethyl acetate=4/1) to give the title compound as a colorless oily substance (1.51 g, yield 60%).

1. extractionextracted with ethyl acetate
2. washAfter that, the organic layer was washed with saturated brine
3. dry with materialdried over anhydrous magnesium sulfate
4. distillationThe solvent was distilled off under reduced pressure
5. customThe residue was purified by silica gel column chromatography (n-hexane/ethyl acetate=4/1)