Triethyl Phosphonoacetate

• CAT Number: R000467
• CAS Number: 867-13-0
• Molecular Formula: C8H17O5P
• Molecular Weight: 224.19
• Purity: ≥95%
• Synonyms: Diethyl Ethoxycarbonylmethylphosphonate; 2-(Diethoxyphosphinyl)acetic Acid Ethyl Ester; (Diethoxyphosphinyl)acetic Acid Ethyl Ester; Carbethoxymethyldiethyl Phosphonate; NSC 13898; NSC 16128
• Storage: -20°C
• IUPAC Name: ethyl 2-diethoxyphosphorylacetate
• InChI: InChI=1S/C8H17O5P/c1-4-11-8(9)7-14(10,12-5-2)13-6-3/h4-7H2,1-3H3
• InChIKey: GGUBFICZYGKNTD-UHFFFAOYSA-N
• SMILES: CCOC(=O)CP(=O)(OCC)OCC

Triethyl phosphonoacetate (Cat No.: R000467) is an organophosphorus compound widely used in organic synthesis, particularly in the Horner–Wadsworth–Emmons (HWE) reaction to form α,β-unsaturated esters. It features a phosphonate group and an ester moiety, making it a valuable C2 synthon for carbon–carbon double bond formation. Its stability and reactivity allow for efficient use under mild conditions. Triethyl phosphonoacetate is commonly employed in the synthesis of pharmaceuticals, natural products, and fine chemicals, especially when stereoselective olefination is desired in complex molecule construction.