反应详情

To a stirred solution of 3-(3-(phenyl((((R)-quinuclidin-3-yloxy)carbonyl)amino)-methyl)phenoxy)propyl benzoate (0.370 g, 0.72 mmol) in methanol (3.6 mL), was added a solution of lithium hydroxide monohydrate (0.060 g, 1.44 mmol) in water (1.2 mL). The reaction mixture was stirred at room temperature for 1 hour. Further lithium hydroxide monohydrate (0.060 g, 1.44 mmol) was added, and the reaction stirred at room temperature for a further 16 hours. The reaction mixture was heated at 40° C. for 3.5 hours and allowed to cool. The solvent was evaporate at reduced pressure, and the residue partitioned between ethyl acetate and water. The aqueous phase was further extracted with ethyl acetate (×2). The combined organic extracts were washed with 10% aqueous potassium carbonate (×2), saturated brine, and dried with anhydrous sodium sulfate. The mixture was filtered and the solvent evaporated at reduced pressure to afford the title compound (0.275 g, 93%).

1. stirringthe reaction stirred at room temperature for a further 16 hours
2. temperatureThe reaction mixture was heated at 40° C. for 3.5 hours
3. temperatureto cool
4. customThe solvent was evaporate at reduced pressure
5. customthe residue partitioned between ethyl acetate and water
6. extractionThe aqueous phase was further extracted with ethyl acetate (×2)
7. washThe combined organic extracts were washed with 10% aqueous potassium carbonate (×2), saturated brine
8. dry with materialdried with anhydrous sodium sulfate
9. filtrationThe mixture was filtered
10. customthe solvent evaporated at reduced pressure