反应详情

温度

110 °C

To a stirred solution of ((S)-1-benzylpyrrolidin-3-yl)-(3-methoxyphenyl)phenylacetonitrile (6.2 g, 16 mmol; prepared as described in Preparation 7) in t-butyl alcohol (150 mL) was added KOH (35 g, 620 mmol). The reaction flask was equipped with a reflux condenser and nitrogen inlet and stirred at 110° C. for 14 days. The mixture was allowed to cool to room temperature. Water (120 mL) and ether (100 mL) were added to the mixture. The organic phase was then separated, and the aqueous phase was extracted 2 times with ether (100 mL each). The organic layers were combined, dried over MgSO4, then filtered. The solvent was removed under reduced pressure and the crude material was then taken in DCM (250 mL) and cooled to 0° C. To this stirred solution was added 1.0 M of boron tribromide in DCM (30 mL, 30 mmol) and the mixture was stirred at 0° C. for 90 minutes. The mixture was then added to a stirred solution of 30% ammonia & ice. The mixture was then filtered through a pad of Celite®, then washed with a saturated aqueous NaCl solution (200 mL). The organic phase was dried over MgSO4, then filtered. The solvent was removed under reduced pressure. The crude material was then subjected to normal hydrogenation conditions to obtain the title compound. MS m/z: {M+H+] calcd for C18H20N2O2, 296.36; found 297.6.

1. customThe reaction flask was equipped with a reflux condenser and nitrogen inlet
2. temperatureto cool to room temperature
3. customThe organic phase was then separated
4. extractionthe aqueous phase was extracted 2 times with ether (100 mL each)
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. customThe solvent was removed under reduced pressure
8. temperaturecooled to 0° C
9. stirringthe mixture was stirred at 0° C. for 90 minutes
10. filtrationThe mixture was then filtered through a pad of Celite®
11. washwashed with a saturated aqueous NaCl solution (200 mL)
12. dry with materialThe organic phase was dried over MgSO4
13. filtrationfiltered
14. customThe solvent was removed under reduced pressure