反应详情

温度

0 °C

To a solution of 2-[4,4-bis-(4-fluorophenyl)-butyl]-5-hydroxyisoquinolinium bromide (4.99 g, 10.61 mmol) in 165 mL of methanol at 0° C. was added sodium borohydride (1.54 g, 40.71 mmol). The reaction mixture was stirred at 0° C. for 15 minutes, then at room temperature for 15 minutes. The mixture was concentrated on a rotavap. The residue was dissolved in ethyl acetate (200 mL) and washed with saturated ammonium chloride solution (150 mL). The organic layer was collected, and the aqueous layer was extracted with ethyl acetate (1×100 mL). The combined organic layers was dried with magnesium sulphate, filtqred, and concentrated to give 1.9 g of crude product as a brown oil. The oil was chromatographed on silica gel eluted with 50% ethyl acetate in hexanes to give 2.54 g of product.

1. waitat room temperature for 15 minutes
2. concentrationThe mixture was concentrated on a rotavap
3. dissolutionThe residue was dissolved in ethyl acetate (200 mL)
4. washwashed with saturated ammonium chloride solution (150 mL)
5. customThe organic layer was collected
6. extractionthe aqueous layer was extracted with ethyl acetate (1×100 mL)
7. dry with materialThe combined organic layers was dried with magnesium sulphate
8. concentrationconcentrated
9. customto give 1.9 g of crude product as a brown oil
10. customThe oil was chromatographed on silica gel
11. washeluted with 50% ethyl acetate in hexanes