Sodium hydride → 5-(2-chloropyridin-3-yl)-1-[(3-fluorophenyl)sulfonyl]-1H-pyrrole-3-carbaldehyde

HRID 1426667Notes

Reaction equation

HRID 1426667 reaction equation
[Cl:1][C:2]1[C:7]([C:8]2[NH:12][CH:11]=[C:10]([CH:13]=[O:14])[CH:9]=2)=[CH:6][CH:5]=[CH:4][N:3]=1.[H-].[Na+].[F:17][C:18]1[CH:19]=[C:20]([S:24](Cl)(=[O:26])=[O:25])[CH:21]=[CH:22][CH:23]=1>O1CCCC1.[Cl-].[Na+].O>[Cl:1][C:2]1[C:7]([C:8]2[N:12]([S:24]([C:20]3[CH:21]=[CH:22][CH:23]=[C:18]([F:17])[CH:19]=3)(=[O:26])=[O:25])[CH:11]=[C:10]([CH:13]=[O:14])[CH:9]=2)=[CH:6][CH:5]=[CH:4][N:3]=1

Participants

6

Reactant 3

HCID 24758Sodium hydrideHCID 27342583-Fluorobenzenesulfonyl ChlorideHCID 866239825-(2-chloropyridin-3-yl)-1H-pyrrole-3-carbaldehyde

Product 1

HCID 866239845-(2-chloropyridin-3-yl)-1-[(3-fluorophenyl)sulfonyl]-1H-pyrrole-3-carbaldehydeYield 95.2%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 57417360Sodium chloride; waterSolvent

Procedure

To a solution of 5-(2-chloropyridin-3-yl)-1H-pyrrole-3-carbaldehyde (250 mg) in tetrahydrofuran (25 mL) was added sodium hydride (60% in oil, 73 mg) at room temperature and the mixture was stirred for 15 min. 3-Fluorobenzenesulfonyl chloride (310 mg) was added to the reaction mixture, and the mixture was further stirred for 30 min. The reaction mixture was diluted with saturated brine, and extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=1:1) to give the title compound as a colorless oil (yield 420 mg, 95%).

Workup

  1. stirringthe mixture was further stirred for 30 min
  2. extractionextracted with ethyl acetate
  3. washThe extract was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=1:1)

Sources & evidence

ORD record
ord-29c4c945c3cf4a29bbdcb0fdb9953bed
Source dataset
uspto-grants-2015_01
Patent number
US08933105B2

Reaction notes

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