1,2-Dioxin

1,2-Dioxin is a heterocyclic, organic, antiaromatic compound with the chemical formula C4H4O2. It is an isomeric form of 1,4-dioxin (or p-dioxin).

1,2-Dioxin
Names
Preferred IUPAC name
1,2-Dioxine
Systematic IUPAC name
1,2-Dioxacyclohexa-3,5-diene
Identifiers
3D model (JSmol)
ChemSpider
Properties
C4H4O2
Molar mass 84.074 g·mol−1
Related compounds
Related compounds
Dibenzodioxin

1,4-Dioxin

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Due to its peroxide-like characteristics, 1,2-dioxin is very unstable and has not been isolated. Even substituted derivatives are very labile, e.g. 1,4-diphenyl-2,3-benzodioxin.[1] Indeed, in 1990, 3,6-bis(p-tolyl)-1,2-dioxin was wrongly accounted as the first stable derivative.[2] It was subsequently shown that the initial compound was not a derivative of 1,2-dioxin, but a thermodynamically more stable dione.[3]

References

  1. Smith, Jimmie P.; Schrock, Alan K.; Schuster, Gary B. (1982). "Chemiluminescence of organic peroxides. Thermal generation of an o-xylylene peroxide". Journal of the American Chemical Society. 104 (4): 1041. doi:10.1021/ja00368a021..
  2. Shine, Henry J.; Zhao, Da Chuan (1990). "Electron transfer to excited doublet states. Photoirradiation of 10-methylphenothiazine cation radical perchlorate in solutions of phenylacetylene and p-tolylacetylene in acetonitrile". The Journal of Organic Chemistry. 55 (13): 4086. doi:10.1021/jo00300a026..
  3. Block, Eric; Shan, Zhixing; Glass, Richard S.; Fabian, Jürgen (2003). "Revised Structure of a Purported 1,2-Dioxin: A Combined Experimental and Theoretical Study". The Journal of Organic Chemistry. 68 (10): 4108–11. doi:10.1021/jo034305i. PMID 12737603.


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