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P-Cymene

4-Isopropyltoluene 4-Methylcumene Paracymene

p-Cymene is a naturally occurring aromatic organic compound. It is classified as an alkylbenzene related to monocyclic monoterpenes. Its structure consists of a benzene ring para-substituted with a methyl group and an isopropyl group. p-Cymene is insoluble in water, but miscible with organic solvents.

Isomers and production

In addition to p-cymene, two less common geometric isomers are o-cymene, in which the alkyl groups are ortho-substituted, and m-cymene, in which they are meta-substituted. p-Cymene is the only natural isomer, as expected from the terpene rule. All three isomers form the group of cymenes.

Cymene is also produced by alkylation of toluene with propene.

References

References

  1. (2014). "Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013 (Blue Book)". [[Royal_Society_of_Chemistry.
  2. (December 2022). "On the intensity of light scattered by molecular liquids - Comparison of experiment and quantum chemical calculations". [[The Journal of Chemical Physics]].
  3. (2021-07-01). "Health beneficial and pharmacological properties of p-cymene". Food and Chemical Toxicology.
  4. (2003). "Alkylation".
  5. (1982). "Inorganic Syntheses".
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flavors alkylbenzenes c4-benzenes monoterpenes isopropyl-compounds
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