Sodium hydride → 5-mesityl-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-3-carbaldehyde

HRID 2197185Notes

Reaction equation

HRID 2197185 reaction equation
[C:1]1([CH3:16])[CH:6]=[C:5]([CH3:7])[CH:4]=[C:3]([CH3:8])[C:2]=1[C:9]1[NH:13][CH:12]=[C:11]([CH:14]=[O:15])[CH:10]=1.[H-].[Na+].C1OCCOCCOCCOCCOC1.[N:34]1[CH:39]=[CH:38][CH:37]=[C:36]([S:40](Cl)(=[O:42])=[O:41])[CH:35]=1.C(=O)([O-])O.[Na+]>O1CCCC1>[C:1]1([CH3:16])[CH:6]=[C:5]([CH3:7])[CH:4]=[C:3]([CH3:8])[C:2]=1[C:9]1[N:13]([S:40]([C:36]2[CH:35]=[N:34][CH:39]=[CH:38][CH:37]=2)(=[O:42])=[O:41])[CH:12]=[C:11]([CH:14]=[O:15])[CH:10]=1

Participants

7

Reactant 5

HCID 24758Sodium hydrideHCID 3633615-Crown-5HCID 516892Sodium BicarbonateHCID 3164136Pyridine-3-sulfonyl chlorideHCID 866309875-mesityl-1H-pyrrole-3-carbaldehyde

Product 1

HCID 866309935-mesityl-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-3-carbaldehyde

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

To a solution of 5-mesityl-1H-pyrrole-3-carbaldehyde (0.36 g) in tetrahydrofuran (20 mL) was added sodium hydride (60% in oil, 0.14 g) under ice-cooling, and the mixture was stirred at room temperature for 0.5 hr. A solution of 15-crown-5 (0.75 g) in tetrahydrofuran (3 mL) was added and, after stirring for 5 min, pyridin-3-ylsulfonyl chloride (0.45 g) was added under ice-cooling. The reaction mixture was stirred at room temperature for 0.5 hr, a saturated aqueous sodium hydrogencarbonate solution 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 silica gel column chromatography (eluent: hexane-ethyl acetate=10:1→2:1) to give the title compound as a pale-brown amorphous form (yield 0.38 g, 62%).

Workup

  1. temperaturecooling
  2. stirringafter stirring for 5 min
  3. temperaturecooling
  4. stirringThe reaction mixture was stirred at room temperature for 0.5 hr
  5. extractionthe mixture was extracted with ethyl acetate
  6. washThe extract was washed with saturated brine
  7. dry with materialdried over anhydrous sodium sulfate
  8. concentrationconcentrated under reduced pressure
  9. customThe residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=10:1→2:1)

Sources & evidence

ORD record
ord-e094225b58dd4560a6346e5ca90789b3
Source dataset
uspto-grants-2012_12
Patent number
US08338462B2

Reaction notes

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