反应详情

To a solution of 2-{[4-(Benzyloxy)-2-fluorocyclohexyl]oxy}-1-phenylethanol (8.46 g, 24.6 mmol) in dichloromethane (100 mL) at 0° C. was added diisopropylethylamine (17.1 mL, 98.8 mmol) and TBSOTf (13.0 mL, 49.4 mmol). The reaction mixture was stirred for 5 min and then poured into water. The layers were separated and the aqueous extracted with dichloromethane (3×). The combined organic layers were washed with water and brine, dried over Na2SO4, filtered and concentrated. Purification by flash column chromatography (5% ethyl acetate in hexanes) gave (2-{[4-(Benzyloxy)-2-fluorocyclohexyl]oxy}-1-phenylethoxy)(tert-butyl)dimethylsilane (11.3 g, 100% yield) as a clear oil.

1. customThe layers were separated
2. extractionthe aqueous extracted with dichloromethane (3×)
3. washThe combined organic layers were washed with water and brine
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated
7. customPurification by flash column chromatography (5% ethyl acetate in hexanes)