反应详情

To a solution of 1-[5-(2,6-dimethyl-phenyl)-1-(6-isopropoxy-pyridazin-3-yl)-1H-pyrrolo[2,3-c]pyridin-3-yl]-2-ethyl-butan-1-one (70 mg, 0.15 mmol) in a (4:1) EtOH—H2O mixture (5 mL) cooled to −30° C., NaBH4 (50 mg, 1.3 mmol) is added, and the mixture is allowed to gradually warm up to room temperature at which the stirring is continued for 2 h. The mixture is concentrated tinder reduced pressure. The residue is diluted with a saturated aqueous solution of Rochelle's salt (10 mL), and the product is extracted with DCM. The combined organic solutions are washed with brine, dried (Na2SO4) and concentrated under reduced pressure. Chromatography of the residue on silica gel (hexane-EtOAc, 1:1) gives 1-[5-(2,6-dimethyl-phenyl)-1-(6-isopropoxy-pyridazin-3-yl)-1H-pyrrolo[2,3-c]pyridin-3-yl]-2-ethyl-butan-1-ol as colorless oil. 1H NMR (CDCl3) 9.52 (s, 1H), 7.83 (s, 1H), 7.71 (s, 1H), 7.69 (s, 1H), 7.59 (s, 1H), 7.22-7.10 (m, 3H), 5.62 (m, 1H), 5.21 (m, 1H), 2.08 (s, 6H), 1.47 (d, J=7 Hz, 6H), 1.08 (s, 9H); LCMS m/z 459.14 (2.48 min).

1. concentrationThe mixture is concentrated tinder reduced pressure
2. additionThe residue is diluted with a saturated aqueous solution of Rochelle's salt (10 mL)
3. extractionthe product is extracted with DCM
4. washThe combined organic solutions are washed with brine
5. dry with materialdried (Na2SO4)
6. concentrationconcentrated under reduced pressure