Reaktion #1754838

Reaktionsgleichung

potassium cyanide

α-bromo-p-chloroacetophenone

acetic acid

→

3-(4-chloro-phenyl)-3-oxo-propionitrile

Lösungsmittel

ethanol

water

water

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   WaschenThe organic layer was washed with brine
2. 2
   ExtraktionThe aqueous layers were extracted with dichloromethane
3. 3
   TrocknenThe combined organic layers were dried over anhydrous magnesium sulfate
4. 4
   Filtrationfiltered
5. 5
   Einengenconcentrated under reduced pressure

Vorschrift

A solution of 5.58 g (86 mmole) of potassium cyanide and 1 mL of water was added in one portion to a solution of 8.0 g (34.3 mmole) of α-bromo-p-chloroacetophenone in 50 mL of 95% ethanol. The mixture was stirred at room temperature for 5 hours, then diluted with water and dichloromethane and acidified with acetic acid. The organic layer was washed with brine. The aqueous layers were extracted with dichloromethane. The combined organic layers were dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure to give crude 3-(4-chloro-phenyl)-3-oxo-propionitrile which was used in next step without further purification.

Quelle