Cyclobutenone
| Names | |
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| IUPAC name
Cyclobut-2-en-1-one
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| Other names
2-Cyclobutene-1-one
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| EC Number |
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| MeSH | cyclobutenone |
PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| C4H4O | |
| Molar mass | 68.075 g·mol−1 |
| Hazards | |
| GHS labelling: | |
| Warning | |
| H302, H315, H319, H335 | |
| P280, P305+P351+P338 | |
| Safety data sheet (SDS) | A2B Chem |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Cyclobutenone is a chemical compound with the formula C4H4O. It is a highly strained cyclic enone which exhibits significant chemical reactivity. Notable reactions of cyclobutenone include acting as a Michael acceptor, a dienophile for Diels-Alder reactions, and a regioselective substrate for activation of C−C bonds. Electrocyclic ring opening of cyclobutenones yields vinylketenes, which serve as reactive intermediates in cycloaddition reactions.