Benzyltriphenylphosphonium bromide

• CAT Number: M049096
• CAS Number: 1449-46-3
• Molecular Formula: C25H22BrP
• Molecular Weight: 433.33
• Purity: ≥95%
• Storage: -20°C
• IUPAC Name: benzyl(triphenyl)phosphanium;bromide
• InChI: InChI=1S/C25H22P.BrH/c1-5-13-22(14-6-1)21-26(23-15-7-2-8-16-23,24-17-9-3-10-18-24)25-19-11-4-12-20-25;/h1-20H,21H2;1H/q+1;/p-1
• InChIKey: WTEPWWCRWNCUNA-UHFFFAOYSA-M
• SMILES: C1=CC=C(C=C1)C[P+](C2=CC=CC=C2)(C3=CC=CC=C3)C4=CC=CC=C4.[Br-]

Benzyltriphenylphosphonium bromide (Cat No.: M049096) is a quaternary phosphonium salt consisting of a triphenylphosphine group bonded to a benzyl moiety, with bromide as the counterion. It is commonly used in organic synthesis, particularly in the Wittig reaction to form alkenes from aldehydes or ketones via stabilized ylide intermediates. This compound is also utilized in phase-transfer catalysis and as a precursor to phosphorus ylides. Its crystalline nature and reactivity make it a valuable reagent in both academic research and industrial organic chemistry.