Triphenylphosphine Hydrobromide

• CAT Number: R016744
• CAS Number: 6399-81-1
• Molecular Formula: C18H16BrP
• Molecular Weight: 343.20
• Purity: ≥95%
• Synonyms: Triphenylphosphine compd. with Hydrobromic Acid; Triphenylphosphonium bromide ??
• Storage: -20°C
• IUPAC Name: triphenylphosphane;hydrobromide
• InChI: InChI=1S/C18H15P.BrH/c1-4-10-16(11-5-1)19(17-12-6-2-7-13-17)18-14-8-3-9-15-18;/h1-15H;1H
• InChIKey: CMSYDJVRTHCWFP-UHFFFAOYSA-N
• SMILES: C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3.Br

Triphenylphosphine hydrobromide(CAT: R016744) is a crystalline organophosphorus salt composed of triphenylphosphine protonated by hydrobromic acid. It appears as a white to off-white solid and is widely used as a reagent in organic synthesis. This compound serves as a source of hydrobromic acid in non-aqueous media and plays a key role in halogenation, reduction, and deoxygenation reactions, particularly in the conversion of alcohols to alkyl bromides. In addition, it is used in the preparation of phosphonium salts and as an intermediate in Wittig and Mitsunobu-type transformations.