反应详情

To a stirred solution of ethyl 5-chloro-6-{[(3R)-1-(cyclohexylmethyl)-3-piperidinyl]amino}nicotinate (321 mg) in tetrahydrofuran (6 mL) was added lithium aluminumhydride (80.2 mg) portionwise in an ice bath and the resulting suspension was stirred at the same temperature for three hours. To this was added saturated aqueous potassium sodium (+)-tartrate tetrahydrate solution portionwise at the same temperature and the mixture was stirred at ambient temperature for one hour. The mixture was extracted with ethyl acetate and the aqueous phase was removed. The organic layer was washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The residue was purified by flash chromatography eluting with ethylacetate-hexane 1:1(v/v) to afford (5-chloro-6-{[(3R)-1-(cyclohexylmethyl)-3-piperidinyl]amino}-3-pyridinyl)methanol (210 mg) as a colorless oil.

1. stirringthe mixture was stirred at ambient temperature for one hour
2. extractionThe mixture was extracted with ethyl acetate
3. customthe aqueous phase was removed
4. washThe organic layer was washed with brine
5. dry with materialdried over anhydrous sodium sulfate
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customThe residue was purified by flash chromatography
9. washeluting with ethylacetate-hexane 1:1(v/v)