# Ethyl propiolate

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Ethyl propiolate Names Preferred IUPAC name Ethyl prop-2-ynoate Other names Ethyl propynoate Ethyl acetylenecarboxylate Identifiers CAS Number 623-47-2 3D model (JSmol) Interactive image Beilstein Reference 878250 ChemSpider 11682 ECHA InfoCard 100.009.815 EC Number 210-795-8 PubChem CID 12182 UNII W235G5U52S CompTox Dashboard (EPA) DTXSID80211359 InChI InChI=1S/C5H6O2/c1-3-5(6)7-4-2/h1H,4H2,2H3 Key: FMVJYQGSRWVMQV-UHFFFAOYSA-N SMILES CCOC(=O)C#C Properties Chemical formula C5H6O2 Molar mass 98.101 g·mol−1 Appearance colorless liquid Density 0.968 g/mL Boiling point 120 °C (248 °F; 393 K) Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chemical compound

**Ethyl propiolate** is an [organic compound](/source/Organic_compound) with the formula HC2CO2C2H5. It is the [ethyl](/source/Ethyl_group) [ester](/source/Ester) of [propiolic acid](/source/Propiolic_acid), the simplest acetylenic [carboxylic acid](/source/Carboxylic_acid). It is a colorless liquid that is miscible with organic solvents. The compound is a reagent and building block for the synthesis of other organic compounds, reactions that exploit the electrophilicity of the alkyne group.[1]

## References

1. **[^](#cite_ref-1)** Dennis E. Vogel; George H. Büchi (1988). "α-Unsubstituted γ,δ-Unsaturated Aldehydes by Claisen Rearrangement: 3-phenyl-4-pentenal". *Org. Synth*. **66**: 29. [doi](/source/Doi_(identifier)):[10.15227/orgsyn.066.0029](https://doi.org/10.15227%2Forgsyn.066.0029).

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