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Phosphorus Tribromide

Other Names:

Phosphorus(III) bromide

General Information:


CAS Number: 7789-60-8

Molecular Weight: 270.69 g/mol

Appearance: Colorless liquid

Chemical Formula: PBr3

Melting Point: -41.5 C

Boiling Point: 175 C

Density: 2.88 g/mL

Common Uses:

Reagent for converting alcohols to alkyl bromides

Procedure excerpt:

To a solution of the SM (1.12 g, 6.66 mmol) in dry ether (19 mL) at 0 C was added dropwise PBr3 (0.626 mL, 6.66 mmol). The ice bath was removed and the reaction was . . .

[full procedure]


1) Patent Reference: WO2015144799, page 189, (18.8 MB)

2) Wikipedia: Phosphorus tribromide (link)

3) Phosphorus tribromide (link)

4) Pearson, A. J.; Roush, W. R.; Handbook of Reagents for Organic Synthesis; Activating Agents and Protecting Groups