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Topic summary

Cyclopentenone

Cyclopentenone
Names Preferred IUPAC name
Cyclopent-2-en-1-one
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard100.012.012
UNII
  • InChI=1S/C5H6O/c6-5-3-1-2-4-5/h1,3H,2,4H2
    Key: BZKFMUIJRXWWQK-UHFFFAOYSA-N
  • C1CC(=O)C=C1
Properties C5H6OMolar mass82.102 g·mol Density0.98 g·mL Boiling point150 °C (302 °F; 423 K) almost insoluble in waterHazards Occupational safety and health (OHS/OSH):
Main hazards
Harmful Flash point42 °C (108 °F; 315 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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2-Cyclopentenone is the organic compound with the chemical formula(CH2)2(CH)2CO. 2-Cyclopentenone contains two functional groups, a ketone and an alkene. It is a colorless liquid. Its isomer, 3-cyclopentenone is less commonly encountered.

The term cyclopentenone may also refer to a structural motif wherein the cyclopentenone moiety is a subunit of a larger molecule. Cyclopentenones are found in a large number of natural products, including jasmone, the aflatoxins, and several prostaglandins.

Wikipedia source