Water → 2-[4-formyl-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-2-yl]benzonitrile

HRID 2197189Notes

Reaction equation

HRID 2197189 reaction equation
Br[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[N:12]([S:13]([C:16]2[CH:17]=[N:18][CH:19]=[CH:20][CH:21]=2)(=[O:15])=[O:14])[CH:11]=[C:10]([CH:22]=[O:23])[CH:9]=1.O.[CH3:25][N:26](C)C=O>[C-]#N.[Zn+2].[C-]#N.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH:22]([C:10]1[CH:9]=[C:8]([C:3]2[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=2[C:25]#[N:26])[N:12]([S:13]([C:16]2[CH:17]=[N:18][CH:19]=[CH:20][CH:21]=2)(=[O:15])=[O:14])[CH:11]=1)=[O:23]

Participants

6

Reactant 3

HCID 962WaterHCID 6228DimethylformamideHCID 866309955-(2-bromophenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-3-carbaldehyde

Product 1

HCID 866309972-[4-formyl-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-2-yl]benzonitrileYield 63%

Reagents, catalysts & solvents 2

HCID 11186Zinc cyanide (Zn(CN)2)CatalystHCID 178418397HCID 178418397, compoundCatalyst

Procedure

A suspension of 5-(2-bromophenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-3-carbaldehyde (102 mg), zinc cyanide (61.0 mg) and tetrakis(triphenylphosphine)palladium (60.0 mg) in N,N-dimethylformamide (2 mL) was heated (100 W, 4 min 30 sec) using a microwave focused chemical synthesis reactor manufactured by CEM, 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 silica gel column chromatography (eluent: hexane-ethyl acetate=4:1→2:1) to give the title compound as a pale-yellow oil (yield 97.4 mg, 63%).

Workup

  1. temperaturewas heated (100 W, 4 min 30 sec)
  2. customchemical synthesis reactor
  3. additionwas added to the reaction mixture
  4. extractionthe mixture was extracted with ethyl acetate
  5. washThe extract was washed with saturated brine
  6. dry with materialdried over anhydrous sodium sulfate
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=4:1→2:1)

Sources & evidence

ORD record
ord-cc8eb6d768c347f0bcb1199e1069684f
Source dataset
uspto-grants-2012_12
Patent number
US08338462B2

Reaction notes

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