反应详情

(4′-Bromobiphenyl-4-yl)methanol (0.70 g, 2.7 mmol) and imidazole (0.54 g, 8.0 mmol) were dissolved in tetrahydrofuran (20 mL), and tert-butyldimethylchlorosilane (1.2 g, 8.0 mmol) was added under a nitrogen atmosphere, followed by stirring at room temperature for 1 hour. Water was added to the reaction solution, which was extracted with ethyl acetate, and subsequently washed sequentially with a saturated sodium hydrogencarbonate solution, water and a saturated aqueous sodium chloride solution. After the organic layer was concentrated under reduced pressure, the resulting residue was purified by chromatography on a silica gel column (Moritex Corporation, elution solvent: hexane/ethyl acetate), and a fraction corresponding to the Rf value=0.90 (hexane/ethyl acetate=9/1) by thin layer chromatography was concentrated under reduced pressure to afford the title compound (0.92 g, 2.4 mmol) as a white solid (yield 91%).

1. extractionwas extracted with ethyl acetate
2. washsubsequently washed sequentially with a saturated sodium hydrogencarbonate solution, water
3. concentrationAfter the organic layer was concentrated under reduced pressure
4. customthe resulting residue was purified by chromatography on a silica gel column (Moritex Corporation, elution solvent: hexane/ethyl acetate)
5. concentrationa fraction corresponding to the Rf value=0.90 (hexane/ethyl acetate=9/1) by thin layer chromatography was concentrated under reduced pressure