反应详情

2-[5-Bromo-2-(hydroxymethyl)phenyl]propan-2-ol (1.1 g, 4.4 mmol) and imidazole (0.78 g, 12 mmol) were dissolved in N,N-dimethylformamide (5 mL), and tert-butyldimethylchlorosilane (0.86 g, 5.7 mmol) was added, followed by stirring at room temperature overnight. Water was added to the reaction solution, followed by extraction with hexane, and subsequently the extract was washed sequentially with water and a saturated aqueous sodium chloride solution, and dried over anhydrous sodium sulfate. After the organic layer was concentrated under reduced pressure, the resulting residue was purified by chromatography on a silica gel column (Biotage Ltd., elution solvent: hexane/ethyl acetate) to afford the title compound (1.1 g, 3.1 mmol) as a colorless oil (yield 70%).

1. extractionfollowed by extraction with hexane
2. washsubsequently the extract was washed sequentially with water
3. dry with materiala saturated aqueous sodium chloride solution, and dried over anhydrous sodium sulfate
4. concentrationAfter the organic layer was concentrated under reduced pressure
5. customthe resulting residue was purified by chromatography on a silica gel column (Biotage Ltd., elution solvent: hexane/ethyl acetate)