Benzyltriphenylphosphonium chloride

• CAT Number: M069838
• CAS Number: 1100-88-5
• Molecular Formula: C25H22ClP
• Molecular Weight: 388.88
• Purity: ≥95%
• Storage: -20°C
• IUPAC Name: benzyl(triphenyl)phosphanium;chloride
• InChI: InChI=1S/C25H22P.ClH/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: USFRYJRPHFMVBZ-UHFFFAOYSA-M
• SMILES: C1=CC=C(C=C1)C[P+](C2=CC=CC=C2)(C3=CC=CC=C3)C4=CC=CC=C4.[Cl-]

Benzyltriphenylphosphonium chloride (Cat No.: M069838) is a quaternary phosphonium salt composed of a benzyl group and three phenyl groups bonded to a central phosphorus atom, with chloride as the counterion. This white to off-white crystalline solid is commonly used as a phase-transfer catalyst and intermediate in organic synthesis. It is particularly valuable in Wittig reactions for the formation of alkenes. Its ionic nature and stability make it useful in polar media, and it is employed in pharmaceutical, polymer, and material chemistry applications.