157929

Methyl (triphenylphosphoranylidene)acetate

98%

• Synonym(s): (Carbomethoxymethylene)triphenylphosphorane, (Methoxycarbonylmethylene)triphenylphosphorane
• Linear Formula: (C₆H₅)₃P=CHCO₂CH₃
• CAS Number: 2605-67-6
• Molecular Weight: 334.35
• Beilstein/REAXYS Number: 618430
• EC Number: 220-018-4
• MDL number: MFCD00008455
• UNSPSC Code: 12352108
• PubChem Substance ID: 24849709
• NACRES: NA.22

Properties

• Quality Level: 200
• assay: 98%
• form: powder
• reaction suitability: reaction type: C-C Bond Formation
• mp: 168-172 °C (lit.)
• functional group: ester; phosphine
• SMILES string: COC(=O)C=P(c1ccccc1)(c2ccccc2)c3ccccc3
• InChI: 1S/C21H19O2P/c1-23-21(22)17-24(18-11-5-2-6-12-18,19-13-7-3-8-14-19)20-15-9-4-10-16-20/h2-17H,1H3
• InChI key: NTNUDYROPUKXNA-UHFFFAOYSA-N

Description

Application

Wittig reagent for the two-carbon homologation of aldehydes to α,β-unsaturated esters. Also used in an efficient synthesis of pyrazoles via reaction with methyl diazoacetate in the presence of triethylamine.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)