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Chavicol (''p''-allylphenol) is a natural
phenylpropene Phenylpropene is the organic compound with the formula C6H5CH2CH=CH2. It is a colorless liquid. The compound consists of a phenyl group attached to allyl. Phenylpropene isomerizes to trans-propenylbenzene. In plant biochemistry, the phenylprop ...
, a type of organic compound. Its chemical structure consists of a benzene ring substituted with a hydroxy group and a propenyl group. It is a colorless liquid found together with terpenes in
betel The betel (''Piper betle'') is a vine of the family Piperaceae, which includes pepper and kava. The betel plant is native to Southeast Asia. It is an evergreen, dioecious perennial, with glossy heart-shaped leaves and white catkins. Betel plan ...
oil.


Properties and reactions

Chavicol is miscible with
alcohol Alcohol most commonly refers to: * Alcohol (chemistry), an organic compound in which a hydroxyl group is bound to a carbon atom * Alcohol (drug), an intoxicant found in alcoholic drinks Alcohol may also refer to: Chemicals * Ethanol, one of sev ...
, ether, and
chloroform Chloroform, or trichloromethane, is an organic compound with chemical formula, formula Carbon, CHydrogen, HChlorine, Cl3 and a common organic solvent. It is a colorless, strong-smelling, dense liquid produced on a large scale as a precursor to ...
.
Dimerization A dimer () (''wikt:di-, di-'', "two" + ''-mer'', "parts") is an oligomer consisting of two monomers joined by bonds that can be either strong or weak, Covalent bond, covalent or Intermolecular force, intermolecular. Dimers also have significant im ...
of chavicol gives the
neo-lignan The lignans are a large group of low molecular weight polyphenols found in plants, particularly seeds, whole grains, and vegetables. The name derives from the Latin word for "wood". Lignans are precursors to phytoestrogens. They may play a role ...
magnolol.


Uses

Chavicol is used as an odorant in perfumery and as a flavor. It is found in many essential oils, including anise and Gardenia.


Biosynthesis

Chavicol is formed in sweet basil (''Ocimum Basilicum'') by the phenylpropanoid pathway via p-coumaryl alcohol. The allylic alcohol in p-coumaryl alcohol is converted into a leaving group. This then leaves thus forming a cation, this cation can be reagrded as a quinone methide which then is reduced by
NADPH Nicotinamide adenine dinucleotide phosphate, abbreviated NADP or, in older notation, TPN (triphosphopyridine nucleotide), is a cofactor used in anabolic reactions, such as the Calvin cycle and lipid and nucleic acid syntheses, which require NAD ...
to form either
anol Anol, also known as ''para''-hydroxypropenylbenzene, is a simple phenol that was derived via demethylation from anethole, an estrogenic constituent of anise and fennel, by Sir Charles Dodds in 1937. It was reported to possess extremely potent ...
or chavicol.Daniel G. Vassao, David R. Gang, Takao Koeduka, Brenda Jackson, Eran Pichersky, Laurence B. Davina and Norman G. Lewis, Organic and Biomolecular Chemistry, 2006, 4, 2733-2744. DOI: 10.1039/b605407b


See also

* Estragole, the methyl ether * Safrole, a methylenedioxy analog


References

{{Phenylpropene Phenols Allyl compounds Perfume ingredients Phenylpropenes