Sodium hydride → (E,E)-4-ethyl-2,4-hexadienenitrile

HRID 2231301

Reaktionsgleichung

Reaktionsgleichung von HRID 2231301
[H-].[Na+].[C:3]([CH2:5]P(=O)(OCC)OCC)#[N:4].[CH2:14](/[C:16](=[CH:19]\[CH3:20])/[CH:17]=O)[CH3:15]>C1C=CC=CC=1.O>[CH2:19](/[C:16](=[CH:14]\[CH3:15])/[CH:17]=[CH:5]/[C:3]#[N:4])[CH3:20]

Komponenten

6

Edukt 3

HCID 24758Sodium hydrideHCID 75676Diethyl (cyanomethyl)phosphonateHCID 53628972-Butenal, 2-ethyl-

Produkt 1

HCID 14329794(E,E)-4-ethyl-2,4-hexadienenitrileAusbeute 41 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 241BenzeneLösungsmittel2×HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

To a mixture of sodium hydride (60% in oil, 7.5 g) and dry benzene (200 ml) was added dropwise diethyl cyanomethylphosphonate (30 g) with stirring at 0° C. under dry nitrogen atmosphere. After stirring for 60 minutes at room temperature, a solution of (E)-2-ethyl-2-butenal (16.6 g) in dry benzene was added thereto at 0° C. with stirring. The resulting mixture was allowed to stand at room temperature for 60 minutes and diluted with water and then extracted with ethyl acetate. The extract was washed successively with water and brine, and then dried over magnesium sulfate. Removal of the solvent gave an oil which was purified by distillation under reduced pressure to give (E,E)-4-ethyl-2,4-hexadienenitrile (8.4 g).

Aufarbeitung

  1. stirringAfter stirring for 60 minutes at room temperature
  2. stirringat 0° C. with stirring
  3. extractionextracted with ethyl acetate
  4. washThe extract was washed successively with water and brine
  5. dry with materialdried over magnesium sulfate
  6. customRemoval of the solvent
  7. customgave an oil which
  8. distillationwas purified by distillation under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-5c0a9d2aee4443d4a6f3dd933ee5aaf4
Quelldatensatz
uspto-grants-1988_11
Patentnummer
US04782088

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