Water → 2-(2-Propenylthio)-4-(4-trifluoromethylphenyl)benzonitrile

HRID 1635717Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1635717
[SH:1][C:2]1[CH:9]=[C:8]([C:10]2[CH:15]=[CH:14][C:13]([C:16]([F:19])([F:18])[F:17])=[CH:12][CH:11]=2)[CH:7]=[CH:6][C:3]=1[C:4]#[N:5].[CH3:20][C:21](C)([O-])[CH3:22].[K+].O>CN(C)C=O>[CH2:22]([S:1][C:2]1[CH:9]=[C:8]([C:10]2[CH:15]=[CH:14][C:13]([C:16]([F:17])([F:18])[F:19])=[CH:12][CH:11]=2)[CH:7]=[CH:6][C:3]=1[C:4]#[N:5])[CH:21]=[CH2:20]

Komponenten

5

Edukt 3

HCID 962WaterHCID 121376372-Mercapto-4-(4-trifluoromethylphenyl)benzonitrileHCID 23665647Potassium tert-butoxide

Produkt 1

HCID 121376382-(2-Propenylthio)-4-(4-trifluoromethylphenyl)benzonitrileAusbeute 43,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

1.0 g (3.6 mmol) of 2-mercapto-4-(4-trifluoromethylphenyl)benzonitrile, 0.45 g (4.0 mmol) of potassium tert-butoxide and 0.5 g (4.1 mmol) of 3-propenyl bromide were stirred in 20 ml of N,N-dimethylformamide at room temperature for 1 hour. The resulting reaction mixture was poured into 20 ml of water and extracted with 50 ml of ethyl acetate twice. The ethyl acetate layer was washed with 50 ml of water twice and dried over anhydrous magnesium sulfate, and the ethyl acetate was distilled off under reduced pressure. Purification of the residue by silica gel column chromatography afforded 0.5 g of 2-(2-propenylthio)-4-(4-trifluoromethylphenyl)benzonitrile (yield 43.0%) as yellow crystals (m.p. 89-90° C.).

Aufarbeitung

  1. customThe resulting reaction mixture
  2. extractionextracted with 50 ml of ethyl acetate twice
  3. washThe ethyl acetate layer was washed with 50 ml of water twice
  4. dry with materialdried over anhydrous magnesium sulfate
  5. distillationthe ethyl acetate was distilled off under reduced pressure
  6. customPurification of the residue by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-c6597f58ac114661ae557a47c619e68d
Quelldatensatz
uspto-grants-2003_01
Patentnummer
US06509354B1

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