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B23261 Triethyl 2-phosphonopropionate, 98%

CAS Number
Diethyl 1-(ethoxycarbonyl)ethanephosphonate
2-Phosphonopropionic acid triethyl ester

Stock No. Size Price ($) Quantity Availability
B23261-09 10g 37.90
B23261-18 50g 113.00
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Triethyl 2-phosphonopropionate, 98%


Chemical Properties

Formula Weight
Boiling Point
Flash Point
Refractive Index
Storage & Sensitivity
Ambient temperatures.
Miscible with chloroform and methanol.


Triethyl 2-phosphonopropionate is used as a reactant in intramolecular conjugate addition for the synthesis of floresolide B, enantioselective synthesis of spiroindane di-methyl acetic acid and in stereo selective intramolecular Diels-Alder reactions. It plays an important role in Horner-Wadsworth-Emmons reactions and chemoenzymatic one-pot synthesis of gamma-butyrolactones. It is also used in the preparation of 3-[2]furyl-2-methyl-acrylic acid ethyl ester by reacting with furfural.


Incompatible with strong bases.

Literature References

Wadsworth-Emmons precursor of methacrylic esters (see Triethyl­ phosphonoacetate, A14120 and Appendix 1). Lithiation followed by acylation with perfluoroalkanoic anhydrides gives a perfluoroacyl intermediate which, with an organolithium reagent, leads stereoselectively to a trifluoroalkylated ɑß-unsaturated ester: J. Fluorine Chem., 89, 141 (1998):

Sharpe, M. A.; Han, J.; Baskin, A. M.; Baskin, D. S. Design and Synthesis of a MAO-B-Selectively Activated Prodrug Based on MPTP: A Mitochondria-Targeting Chemotherapeutic Agent for Treatment of Human Malignant Gliomas. ChemMedChem 2015, 10 (4), 621-628.

Shouksmith, A. E.; Evans, L. E.; Tweddle, D. A.; Miller, D. C.; Willmore, E.; Newell, D. R.; Golding, B. T.; Griffin, R. J. Synthesis and Activity of Putative Small-molecule Inhibitors of the F-box Protein SKP2. Aust. J. Chem. 2015, 68 (4), 660-679.

GHS Hazard and Precautionary Statements

Hazard Statements: H227-H315-H319-H335

Combustible liquid. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P210-P235-P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P362-P370+P378q-P501c

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep cool. Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant

Other References

Harmonized Tariff Code


  • A10199

    L-Proline, 99%
  • A10249

    Tetra-n-butylammonium bromide, 98+%
  • A13760

    Trimethyl orthoformate, 99%
  • A15275

    Boron trifluoride diethyl etherate, 98+%
  • 31721

    Methanol, ACS, absolute, low acetone, 99.8+%

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