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quinoneenUK
qui·none Q0035100 (kwĭ-nōn′, kwĭn′ōn′)n.1. Either of two isomeric unsaturated cyclic compounds having the formula C6H4O2, found widely in plants, especially in a yellow crystalline form, and used in making dyes, tanning hides, and photography.2. Any of various quinonoid compounds, often yellow to red in color, many of which have biological derivation or importance, such as coenzyme-Q.quinone (kwɪˈnəʊn; ˈkwɪnəʊn) n (Elements & Compounds) another name for benzoquinonequi•none (kwɪˈnoʊn, ˈkwɪn oʊn)
n. 1. a yellow, crystalline, cyclic compound, C6H4O2, used chiefly in photography and in tanning leather. 2. any of a class of compounds of this type. [1850–55; quin(ic acid) a compound found in cinchona bark and the leaves of other plants(quinic < Sp quin(a) quinine + -ic) + -one] Thesaurus| Noun | 1. | quinone - any of a class of aromatic yellow compounds including several that are biologically important as coenzymes or acceptors or vitamins; used in making dyesbenzoquinonechemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weightcoenzyme Q, ubiquinone - any of several quinones found in living cells and that function as coenzymes that transfer electrons from one molecule to another in cell respiration |
Translations
QuinoneenUK
quinone[′kwi‚nōn] (organic chemistry) CO(CHCH)2CO Yellow crystalline compound with irritating aroma; melts at 116°C; soluble in alcohol, alkalies, and ether; used to make dyes and hydroquinone. Also known as benzoquinone; chinone. Quinone any one of a class of cyclic diketones in which both carbonyl (C=O) groups are in a system of conjugated double bonds. Quinones are obtained in the form of colored crystals, which have a sharp odor. For example, para-benzoquinone (I), with a melting point of 116°C, and 1,4-naphthoquinone (II), with a melting point of 128.5°C, are yellow, while ortho-benzoquinone (III), with a melting point of 70°–80°C (with decomposition), and anthraquinone are red (seeANTHRAQUINONE). Various pigments in nature are derivatives of quinones; for example, muscapharin, the dye substance of the fly agaric, is a derivative of para-benzoquinone. Quinones are readily reduced to yield diatomic phenols [for example, in industry, hydroquinone is obtained from (I) in this way]. They actively enter in diene synthesis, 
as well as form molecular complexes with phenols. They are used in analytical chemistry. Quinones are obtained by several methods, including the oxidation of the aromatic hydrocarbons or of their hydroxy or amino derivatives; for example, (I) is obtained by the oxidation of aniline, while (II) and anthraquinone are obtained by the oxidation of naphthalene and anthracene, respectively. Quinones and their derivatives are intermediate products in the production of dyes (seeANTHRAQUINONE DYES). They are also used as fungicides, insecticides, and tanning agents. 2-Methyl-1,4-naphthoquinone is a vitamin of the vitamin K group. quinoneenUK
quin·one (kwin'ōn, kwī'nōn), 1. General name for aromatic compounds bearing two oxygens in place of two hydrogens, usually in the para position; the oxidation product of a hydroquinone. 2. Synonym(s): 1, 4-benzoquinone (1) quinone (kwĭ-nōn′, kwĭn′ōn′)n.1. Either of two isomeric unsaturated cyclic compounds having the formula C6H4O2, found widely in plants, especially in a yellow crystalline form, and used in making dyes, tanning hides, and photography.2. Any of various quinonoid compounds, often yellow to red in color, many of which have biological derivation or importance, such as coenzyme-Q.quinone (1) 1,4-Benzoquinone, see there.
(2) An aromatic compound with two oxygens substituted for two hydrogens.quinone any of the various compounds derived from benzene.quinoneenUK
Related to quinone: benzoquinone, quinine, hydroquinoneSynonyms for quinonenoun any of a class of aromatic yellow compounds including several that are biologically important as coenzymes or acceptors or vitaminsSynonymsRelated Words- chemical compound
- compound
- coenzyme Q
- ubiquinone
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