反应详情

温度

0 °C

To a solution of 1-[(1-ethoxyethyl)-4-(4-fluorophenyl)-5-[4-(methylthio)phenyl)-1H-imidazol-2-yl]ethanone (Step 1) (1.08 g.; 2.9 mmol) at 25° C. was added sodium borohydride (109.7 mg; 2.9 mmol). After stirring for 20 hours, the reaction mixture was cooled to 0° C. and 50 ml of a 1% aqueous solution of hydrochloric acid was added. This solution was saturated with solid sodium chloride and extracted with 100 ml, then 2×50 ml of methylene chloride. The organics were combined then washed with 50 ml of a saturated, aqueous solution of sodium bicarbonate. The organic extracts were dried (MgSO4), filtered and evaporated under reduced pressure to provide 1.06 g of a light yellow foam, which was purified by flash chromatography (SiO2, 75% ethyl acetate/hexane) to provide 907 mg of the desired protected alcohol.

1. extractionextracted with 100 ml
2. washThe organics were combined then washed with 50 ml of a saturated, aqueous solution of sodium bicarbonate
3. dry with materialThe organic extracts were dried (MgSO4)
4. filtrationfiltered
5. customevaporated under reduced pressure