Description

4-Methylphenyl diphenylphosphinate (CAS No. 21713-53-1) is a high-purity organophosphorus compound with the molecular formula C₁₉H₁₇O₂P. This chemical, also known by its IUPAC name 1-diphenylphosphoryloxy-4-methylbenzene, is a versatile reagent widely used in organic synthesis and catalysis. Its unique structure, featuring a phosphoryloxy group linked to a methyl-substituted phenyl ring, makes it valuable for applications in asymmetric synthesis, ligand design, and polymer chemistry. Our product is rigorously tested to ensure ≥98% purity (HPLC/GC), with stringent quality control for moisture, heavy metals, and residual solvents. Available in quantities from 1g to 1kg with customizable packaging, it’s ideal for research laboratories and industrial R&D. Storage recommendations: Keep under inert gas at 2-8°C in amber glass containers to prevent degradation.

Properties

• CAS Number: 21713-53-1
• Complexity: 353
• IUPAC Name: 1-diphenylphosphoryloxy-4-methyl-benzene
• InChI: InChI=1S/C19H17O2P/c1-16-12-14-17(15-13-16)21-22(20,18-8-4-2-5-9-18)19-10-6-3-7-11-19/h2-15H,1H3
• InChI Key: MXUTXGVBQWSBJT-UHFFFAOYSA-N
• Exact Mass: 308.09661678
• Molecular Formula: C19H17O2P
• Molecular Weight: 308.3
• SMILES: CC1=CC=C(C=C1)OP(=O)(C2=CC=CC=C2)C3=CC=CC=C3
• Topological: 26.3
• Monoisotopic Mass: 308.09661678
• Synonyms: 4-methylphenyl diphenylphosphinate, 21713-53-1, DTXSID40301760, DTXCID90252894, NSC146168, Phosphinic acid,diphenyl-, 4-methylphenyl ester (9CI), SCHEMBL17491592, NSC-146168

Application

4-Methylphenyl diphenylphosphinate serves as a key intermediate in the synthesis of chiral phosphine ligands for asymmetric hydrogenation reactions. It is employed as a phosphorylating agent in nucleoside chemistry and peptide modification. Researchers utilize this compound in flame retardant formulations due to its phosphorus-rich structure. Its stability under acidic conditions makes it suitable for catalytic systems in cross-coupling reactions.

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