Sodium hydride → 1-[(6-Methoxypyridin-3-yl)sulfonyl]-5-phenyl-1H-pyrrole-3-carbaldehyde

HRID 2196912Notes

Reaction equation

HRID 2196912 reaction equation
[C:1]1([C:7]2[NH:11][CH:10]=[C:9]([CH:12]=[O:13])[CH:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[H-].[Na+].C1OCCOCCOCCOCCOC1.[CH3:31][O:32][C:33]1[N:38]=[CH:37][C:36]([S:39](Cl)(=[O:41])=[O:40])=[CH:35][CH:34]=1>O1CCCC1.C(OCC)(=O)C>[CH3:31][O:32][C:33]1[N:38]=[CH:37][C:36]([S:39]([N:11]2[C:7]([C:1]3[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=3)=[CH:8][C:9]([CH:12]=[O:13])=[CH:10]2)(=[O:41])=[O:40])=[CH:35][CH:34]=1

Participants

7

Reactant 4

HCID 24758Sodium hydrideHCID 3633615-Crown-5HCID 110520905-Phenyl-1H-pyrrole-3-carboxaldehydeHCID 223447096-Methoxypyridine-3-sulfonyl chloride

Product 1

HCID 866207551-[(6-Methoxypyridin-3-yl)sulfonyl]-5-phenyl-1H-pyrrole-3-carbaldehydeYield 17.3%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

Under an argon atmosphere, 5-phenyl-1H-pyrrole-3-carbaldehyde (171 mg) was dissolved in absolute tetrahydrofuran (20 mL), and sodium hydride (60% in oil, 200 mg) was added at room temperature while stirring. After stirring at the same temperature for 15 min, 15-crown-5 (1.01 mL) was added, and the mixture was further stirred at the same temperature for 15 min. 6-Methoxypyridin-3-ylsulfonyl chloride (623 mg) was added, and the mixture was stirred at the same temperature for 1 hr. The reaction mixture was diluted with ethyl acetate, washed successively with saturated aqueous sodium hydrogencarbonate solution and saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure and the residue was purified by silica gel column chromatography (eluent:hexane-ethyl acetate=19:1→1:1) to give the title compound as an oil (yield 59 mg, 17%).

Workup

  1. stirringAfter stirring at the same temperature for 15 min
  2. stirringthe mixture was further stirred at the same temperature for 15 min
  3. stirringthe mixture was stirred at the same temperature for 1 hr
  4. washwashed successively with saturated aqueous sodium hydrogencarbonate solution and saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customThe solvent was evaporated under reduced pressure
  7. customthe residue was purified by silica gel column chromatography (eluent:hexane-ethyl acetate=19:1→1:1)

Sources & evidence

ORD record
ord-facba16a07374c888bf4fc2e8fcbf2bf
Source dataset
uspto-grants-2012_12
Patent number
US08338461B2

Reaction notes

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