Phosphorus tribromide → 1-Bromo-2-(2-bromoethyl)benzene

Participants

Reaction Steps

To 550.0 g of o-bromophenethyl alcohol, while stirring, is added, dropwise, 375.0 g of phosphorus tribromide. After stirring for 3 hours at room temperature, the reaction mixture is heated on a steam bath for 3 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.

Provenance & Evidence