反应详情

Prepared according to the method described in Example 26e) from (2R)-2-(tert-butyldimethylsilyloxy)-4-(3-pyridyl)-1-butyl para-toluenesulfonate (1.0 g), sodium hydride (60% dispersion in mineral oil, 0.115 g) and 3-fluorobiphenyl-4-ol (0.52 g) in dimethylformamide (15 ml). The adduct was dissolved in tetrahydrofuran (10 ml) and tetrabutylammonium fluoride (1.08 g) was added. The reaction was stirred at ambient temperature for 3 hours and was then poured into brine and extracted with ether. The combined organic extracts were dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. The residue obtained was purified by column chromatography over silica eluting with dichloromethane:ethanol (19:1) to give the title compound as a white solid (0.25 g).

1. customPrepared
2. extractionextracted with ether
3. dry with materialThe combined organic extracts were dried over anhydrous magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customThe residue obtained
7. customwas purified by column chromatography over silica eluting with dichloromethane:ethanol (19:1)