Benzyl Bromide → 1-benzyl-1H-pyrrole-2-carbaldehyde

HRID 11233

Reaktionsgleichung

Reaktionsgleichung von HRID 11233
[H-].[Na+].[CH:3]([C:5]1[NH:6][CH:7]=[CH:8][CH:9]=1)=[O:4].[CH2:10](Br)[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1>CN(C=O)C>[CH2:10]([N:6]1[CH:7]=[CH:8][CH:9]=[C:5]1[CH:3]=[O:4])[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1

Komponenten

5

Edukt 3

HCID 7498Benzyl BromideHCID 13854Pyrrole-2-carboxaldehydeHCID 24758Sodium hydride

Produkt 1

HCID 111269641-benzyl-1H-pyrrole-2-carbaldehydeAusbeute 97,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel3×

Versuchsvorschrift

To a suspension of sodium hydride (60% in mineral oil, 4.8 g, 120 mmol) in DMF (100 ml) was added dropwise at an ice bath temperature a solution of 2-formylpyrrole (9.5 g, 100 mmol) in DMF (10 ml). The mixture was stirred for 15 minutes at room temperature and cooled again. To the mixture was added dropwise a solution of benzylbromide (20.5 g, 120 mmol) in DMF (10 ml). The reaction mixture was stirred for 60 minutes at room temperature and poured to ice-water, and extracted with ethylacetate. The extract was washed with water and dried. The solvent was evaporated to give 1-benzyl-2-formylpyrrole (18.0 g) as an oil quantitatively.

Aufarbeitung

  1. temperaturecooled again
  2. stirringThe reaction mixture was stirred for 60 minutes at room temperature
  3. extractionextracted with ethylacetate
  4. washThe extract was washed with water
  5. customdried
  6. customThe solvent was evaporated

Quellen und Nachweise

ORD-Eintrag
ord-adb81272ca584cc785975b5ebb402ce7
Quelldatensatz
uspto-grants-2006_08
Patentnummer
US07098201B2

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