Reaktion #1163750

Reaktionsgleichung

o-bromophenethyl alcohol

phosphorus tribromide

→

o-bromophenethyl bromide

Ausbeute 145.2%

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONis added
2. 2
   Temperaturthe reaction mixture is heated on a steam bath for three hours
3. 3
   ExtraktionThe mixture is extracted with three 600 and two 200 ml portions of ether
4. 4
   WaschenThe ether extracts are washed
5. 5
   Sonstigedried
6. 6
   Einengenconcentrated
7. 7
   workup.DISTILLATIONthe residue is distilled

Vorschrift

To 550.0 g of o-bromophenethyl alcohol, while stirring, is added, dropwise, 375.0 g of phosphorus tribromide. After stirring for three hours at room temperature, the reaction mixture is heated on a steam bath for three hours and then poured into 6 kg of crushed ice. The mixture is extracted with three 600 and two 200 ml portions of ether. The ether extracts are washed, dried, concentrated, and the residue is distilled to give 531.0 g of o-bromophenethyl bromide, bp. about 86°-88° (0.9mm), nD26 1.5922.

Quelle