Tropone

Tropone^[1]
Structure of tropone	Space-filling model of tropone
Names
	Preferred IUPAC name Cyclohepta-2,4,6-trien-1-one
	Other names Cyclohepta-2,4,6-trienone
Identifiers
CAS Number	539-80-0 ;
3D model (JSmol)	Interactive image;
ChemSpider	10419 ;
ECHA InfoCard	100.007.933
PubChem CID	10881;
UNII	CO48X7SUFH ;
CompTox Dashboard (EPA)	DTXSID60202169 ;
	InChI InChI=1S/C7H6O/c8-7-5-3-1-2-4-6-7/h1-6H Key: QVWDCTQRORVHHT-UHFFFAOYSA-N ; InChI=1/C7H6O/c8-7-5-3-1-2-4-6-7/h1-6H Key: QVWDCTQRORVHHT-UHFFFAOYAM;
	SMILES O=C\1/C=C\C=C/C=C/1;
Properties
Chemical formula	C7H6O
Molar mass	106.12 g/mol
Density	1.094 g/mL
Boiling point	113 °C (235 °F; 386 K) (15 mmHg)
Hazards
Flash point	> 113 °C (235 °F; 386 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Tropone or 2,4,6-cycloheptatrien-1-one is an organic compound with some importance in organic chemistry as a non-benzenoid aromatic.^[2] The compound consists of a ring of seven carbon atoms with three conjugated alkene groups and a ketone group. The related compound tropolone (2-hydroxy-2,4,6-cycloheptatrien-1-one) has an additional alcohol (or an enol including the double bond) group next to the ketone. Tropones are uncommon in natural products, with the notable exception of the 2-hydroxyl derivatives, which are called tropolones.

Tropone has been known since 1951 and is also called cycloheptatrienylium oxide. The name tropolone was coined by M. J. S. Dewar in 1945 in connection to perceived aromatic properties.^[3]

^ Tropone at Sigma-Aldrich
^ Pauson, Peter L. (1955). "Tropones and Tropolones". Chem. Rev. 55 (1): 9–136. doi:10.1021/cr50001a002.
^ M. J. S. Dewar (1945). "Structure of Stipitatic Acid". Nature. 155 (3924): 50–51. Bibcode:1945Natur.155...50D. doi:10.1038/155050b0. S2CID 4086209.

[1] Tropone at Sigma-Aldrich

[Paulson1955-2] Pauson, Peter L. (1955). "Tropones and Tropolones". Chem. Rev. 55 (1): 9–136. doi:10.1021/cr50001a002.

[3] M. J. S. Dewar (1945). "Structure of Stipitatic Acid". Nature. 155 (3924): 50–51. Bibcode:1945Natur.155...50D. doi:10.1038/155050b0. S2CID 4086209.

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