Sodium borohydride → 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

HRID 602551Notes

Reaction equation

HRID 602551 reaction equation
[CH3:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([CH3:8])[C:3]=1[C:9]1[CH:10]=[C:11]2[C:17]([C:18](=[O:24])[CH:19]([CH2:22][CH3:23])[CH2:20][CH3:21])=[CH:16][N:15]([C:25]3[N:26]=[N:27][C:28]([O:31][CH:32]([CH3:34])[CH3:33])=[CH:29][CH:30]=3)[C:12]2=[CH:13][N:14]=1.[BH4-].[Na+]>C(O)C.O>[CH3:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([CH3:8])[C:3]=1[C:9]1[CH:10]=[C:11]2[C:17]([CH:18]([OH:24])[CH:19]([CH2:20][CH3:21])[CH2:22][CH3:23])=[CH:16][N:15]([C:25]3[N:26]=[N:27][C:28]([O:31][CH:32]([CH3:34])[CH3:33])=[CH:29][CH:30]=3)[C:12]2=[CH:13][N:14]=1

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 671526521-[5-(2,6-dimethyl-phenyl)-1-(6-isopropoxy-pyridazin-3-yl)-1H-pyrrolo[2,3-c]pyridin-3-yl]-2-ethyl-butan-1-one

Product 1

HCID 582699361-[5-(2,6-dimethyl-phenyl)-1-(6-isopropoxy-pyridazin-3-yl)-1H-pyrrolo[2,3-c]pyridin-3-yl]-2-ethyl-butan-1-ol

Reagents, catalysts & solvents 1

HCID 19096565Water ethanolSolvent

Procedure

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) −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 under 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).

Workup

  1. concentrationThe mixture is concentrated under 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

Sources & evidence

ORD record
ord-df5f99ccbb6f4902b79085610ea534b2
Source dataset
uspto-grants-2011_03
Patent number
US07906528B2

Reaction notes

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