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Anthrone

Chemical compound From Wikipedia, the free encyclopedia

Anthrone
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Anthrone is a tricyclic aromatic ketone. It is used for a common cellulose assay and in the colorimetric determination of carbohydrates.[1]

Quick Facts Names, Identifiers ...

Derivatives of anthrone are used in pharmacy as laxative. They stimulate the motion of the colon and reduce water reabsorption. Some anthrone derivatives can be extracted from a variety of plants, including Rhamnus frangula, Aloe ferox, Rheum officinale, and Cassia senna.[2] Glycosides of anthrone are also found in high amounts in rhubarb leaves, and alongside concentrated amounts of oxalic acid are the reason for the leaves being inedible.

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Synthesis and reactions

Anthrone can be prepared from anthraquinone by reduction with tin or copper.[3]

An alternative synthesis involves cyclization of o-benzylbenzoic acid induced with hydrogen fluoride.[4]

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Anthrone syntheses

Anthrone condenses with glyoxal to give, following dehydrogenation, acedianthrone, a useful octacyclic pigment.[5]

Tautomer

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Tautomeric equilibrium for anthrone.

Anthrone is the more stable tautomer relative to the anthrol. The tautomeric equilibrium is estimated at 100 in aqueous solution. For the two other isomeric anthrols, the tautomeric equilibrium is reversed.[6]

References

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