Cyclopropenone

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Cyclopropenone
Cyclopropenone.svg
C3H2OResonance.png
Main resonance structures of cyclopropenone.
Cyclopropenone-3D-vdW.png
Names
Preferred IUPAC name
Cycloprop-2-en-1-one
Other names
Cyclopropenone, Cyclopropene-3-one
Identifiers
3D model (JSmol)
ChemSpider
PubChem CID
UNII
  • InChI=1S/C3H2O/c4-3-1-2-3/h1-2H
    Key: GGRQLKPIJPFWEZ-UHFFFAOYSA-N
  • InChI=1/C3H2O/c4-3-1-2-3/h1-2H
    Key: GGRQLKPIJPFWEZ-UHFFFAOYAI
  • c1cc1=O
Properties
C3H2O
Molar mass 54.048 g·mol−1
AppearanceColorless liquid
Melting point −29 to −28 °C (−20 to −18 °F; 244 to 245 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Cyclopropenone is an organic compound with molecular formula C3H2O consisting of a cyclopropene carbon framework with a ketone functional group. It is a colorless, volatile liquid that boils near room temperature. [1] Neat cyclopropenone polymerizes upon standing at room temperature, [2] and chemical vendors typically supply it as an acetal. [3] The chemical properties of the compound are dominated by the strong polarization of the carbonyl group, which gives a partial positive charge with aromatic stabilization on the ring and a partial negative charge on oxygen. It is an aromatic compound. [4] [5]

See also

Related Research Articles

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<span class="mw-page-title-main">Cyclopropenium ion</span>

The cyclopropenium ion is the cation with the formula C
3
H+
3
. It has attracted attention as the smallest example of an aromatic cation. Its salts have been isolated, and many derivatives have been characterized by X-ray crystallography. The cation and some simple derivatives have been identified in the atmosphere of the Saturnian moon Titan.

<span class="mw-page-title-main">1,3-Diphenylisobenzofuran</span> Chemical compound

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References

  1. R. Breslow, J. Pecoraro, T. Sugimoto "Cyclpropenone" Org. Synth. 1977, vol. 57, pp. 41. doi : 10.15227/orgsyn.057.0041
  2. Breslow, Ronald; Oda, Masaji (1972-06-01). "Isolation and characterization of pure cyclopropenone". Journal of the American Chemical Society. 94 (13): 4787–4788. doi:10.1021/ja00768a089. ISSN   0002-7863.
  3. Elliott, Gregory I.; Boger, Dale L. "Cyclopropene, 3,3Dimethoxy". Encyclopedia of Reagents for Organic Synthesis . doi:10.1002/047084289X.rn00486. Dimethyl cyclopropenone ketal is less stable than the corresponding cyclic ketal derivatives....A direct route to cyclopropenone is the hydrolysis of 3,3dimethoxy­cyclopropene.
  4. "Experiments show cyclopropenone is aromatic". Chem. Eng. News. 61 (38): 33. 1983. doi:10.1021/cen-v061n038.p033.
  5. Peart, Patricia A.; Tovar, John D. (2010). "Poly(cyclopropenone)s: Formal Inclusion of the Smallest Hückel Aromatic into π-Conjugated Polymers". J. Org. Chem. 76 (15): 5689–5696. doi:10.1021/jo101108f. PMID   20704438.