Potassium Cyanide → 2-(3,4-Dichlorophenyl)-2-hydroxyacetonitrile

HRID 1601891

Reaktionsgleichung

Reaktionsgleichung von HRID 1601891
[Cl:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][C:9]=1[Cl:10])[CH:5]=[O:6].[C-:11]#[N:12].[K+]>O>[Cl:1][C:2]1[CH:3]=[C:4]([CH:5]([OH:6])[C:11]#[N:12])[CH:7]=[CH:8][C:9]=1[Cl:10]

Komponenten

4

Edukt 2

HCID 9032Potassium CyanideHCID 227103,4-Dichlorobenzaldehyde

Produkt 1

HCID 136165902-(3,4-Dichlorophenyl)-2-hydroxyacetonitrileAusbeute 94 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel2×

Versuchsvorschrift

A mixture of 70 g of 3,4-dichlorobenzaldehyde and 90 g of Na2S2O5 in 300 ml of water is stirred overnight at RT. The reaction mixture is cooled to 0° C., a solution of 52 g of KCN in 100 ml of water is added dropwise and the reaction mixture is stirred while the temperature is allowed to rise to RT. It is extracted with ether, the organic phase is washed with water and dried over Na2SO4 and the solvent is evaporated off under vacuum to give 76 g of the expected product, which is used as such.

Aufarbeitung

  1. temperatureThe reaction mixture is cooled to 0° C.
  2. stirringthe reaction mixture is stirred while the temperature
  3. customto rise to RT
  4. extractionIt is extracted with ether
  5. washthe organic phase is washed with water
  6. dry with materialdried over Na2SO4
  7. customthe solvent is evaporated off under vacuum

Quellen und Nachweise

ORD-Eintrag
ord-037fea5082df485f8d634629c12a0f33
Quelldatensatz
uspto-grants-1999_11
Patentnummer
US05977359

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