Methanol → tert-butyl ({5-[2-fluoro-3-(hydroxymethyl)phenyl]-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl}methyl)methylcarbamate

HRID 2070492Notes

Reaction equation

HRID 2070492 reaction equation
[F:1][C:2]1[C:7]([CH:8]=[O:9])=[CH:6][CH:5]=[CH:4][C:3]=1[C:10]1[N:14]([S:15]([C:18]2[CH:19]=[N:20][CH:21]=[CH:22][CH:23]=2)(=[O:17])=[O:16])[CH:13]=[C:12]([CH2:24][N:25]([CH3:33])[C:26](=[O:32])[O:27][C:28]([CH3:31])([CH3:30])[CH3:29])[CH:11]=1.[BH4-].[Na+].CO.O>O1CCCC1>[F:1][C:2]1[C:7]([CH2:8][OH:9])=[CH:6][CH:5]=[CH:4][C:3]=1[C:10]1[N:14]([S:15]([C:18]2[CH:19]=[N:20][CH:21]=[CH:22][CH:23]=2)(=[O:17])=[O:16])[CH:13]=[C:12]([CH2:24][N:25]([CH3:33])[C:26](=[O:32])[O:27][C:28]([CH3:29])([CH3:30])[CH3:31])[CH:11]=1

Participants

6

Reactant 4

HCID 887MethanolHCID 962WaterHCID 4311764Sodium borohydrideHCID 86631002tert-butyl {[5-(2-fluoro-3-formylphenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl]methyl}methylcarbamate

Product 1

HCID 66974714tert-butyl ({5-[2-fluoro-3-(hydroxymethyl)phenyl]-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl}methyl)methylcarbamateYield 61.1%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of tert-butyl {[5-(2-fluoro-3-formylphenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl]methyl}methylcarbamate (388 mg) in tetrahydrofuran (8 mL) were added under ice-cooling, sodium borohydride (41.3 mg) and methanol (3 mL). After stirring at the same temperature for 30 min, water was added to the reaction mixture and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The residue was purified by basic silica gel column chromatography (eluent: hexane-ethyl acetate=2:1→1:2) to give the title compound as a colorless oil (yield 238 mg, 61%).

Workup

  1. temperaturecooling
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe extract was washed with saturated brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by basic silica gel column chromatography (eluent: hexane-ethyl acetate=2:1→1:2)

Sources & evidence

ORD record
ord-08442d0e34ca43c3bb766dc9869c639e
Source dataset
uspto-grants-2012_10
Patent number
US08299261B2

Reaction notes

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