Potassium Carbonate → 2-(3-Pyridyl)-3-(2,4-dichlorophenyl)-2-propenenitrile

HRID 1463834

Reaktionsgleichung

Reaktionsgleichung von HRID 1463834
[Cl:1][C:2]1[CH:9]=[C:8]([Cl:10])[CH:7]=[CH:6][C:3]=1[CH:4]=O.[N:11]1[CH:16]=[CH:15][CH:14]=[C:13]([CH2:17][C:18]#[N:19])[CH:12]=1.C([O-])([O-])=O.[K+].[K+]>C(O)=C>[N:11]1[CH:16]=[CH:15][CH:14]=[C:13]([C:17](=[CH:4][C:3]2[CH:6]=[CH:7][C:8]([Cl:10])=[CH:9][C:2]=2[Cl:1])[C:18]#[N:19])[CH:12]=1

Komponenten

5

Edukt 3

HCID 11430Potassium CarbonateHCID 134042,4-DichlorobenzaldehydeHCID 809233-Pyridineacetonitrile

Produkt 1

HCID 542432932-(3-Pyridyl)-3-(2,4-dichlorophenyl)-2-propenenitrileAusbeute 76 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 11199Vinyl alcoholLösungsmittel

Versuchsvorschrift

To a stirred solution of 2,4-dichlorobenzaldehyde (5.0 g, 29 mmole) and 3-pyridylacetonitrile (3.05 ml, 29 mmole) in 150 ml absolute ethenol were added 3.95 g K2CO3. After stirring for about 15 minutes, a white solid precipitated out of the reaction mixture. The reaction mixture was stirred overnight and filtered. The filter cake was washed with absolute ethanol and dissolved in CH2Cl2. The CH2Cl2 solution was filtered and concentrated in vacuo. The resulting white solid was recrystallized from 3:2 hexane/ethyl acetate to give 6.0 g (76%) of the title compound.

Aufarbeitung

  1. customa white solid precipitated out of the reaction mixture
  2. stirringThe reaction mixture was stirred overnight
  3. filtrationfiltered
  4. washThe filter cake was washed with absolute ethanol
  5. dissolutiondissolved in CH2Cl2
  6. filtrationThe CH2Cl2 solution was filtered
  7. concentrationconcentrated in vacuo
  8. customThe resulting white solid was recrystallized from 3:2 hexane/ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-e7c4b1f4107e485b8b95734498c15995
Quelldatensatz
uspto-grants-1994_04
Patentnummer
US05302606

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