Pyrone

Pyrone
2-Pyron
4-Pyron

Pyrone oder Pyranone sind eine Gruppe zyklischer chemischer Verbindungen aus der Gruppe der sauerstoffhaltigen Heterozyklen. Sie enthalten einen ungesättigten Sechsring mit einem Sauerstoffatom und einer Ketogruppe. Es existieren zwei isomere Verbindungen: 2-Pyron und 4-Pyron. Die 2-Pyron-Struktur kommt in der Natur als Teil des Coumarin-Ringsystems vor. 4-Pyron kommt ebenfalls in einigen natürlichen chemischen Verbindungen wie Maltol und Kojisäure vor.

Quellen

  • Introduction to Organic Chemistry, Andrew Streitwieser, Jr. and Clayton H. Heathcock, Third Edition, pp 1038-1040. ISBN 0-02-418140-4

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  • Pyrone — Py rone, n. [G. pyron, an abbr. of pyrokoman.] (Org. Chem.) An unsaturated cyclic compound, {C5H4O2}, of which two varieties are known, [alpha] and [gamma]. [gamma] pyrone is the parent substance of several natural yellow dyestuffs …   The Collaborative International Dictionary of English

  • pyrone — [pī′rōn΄, pī rōn′] n. [Ger pyron: see PYRO & ONE] 1. either of two isomeric, unsaturated, closed chain compounds, C5H4O2, from which several yellow dyes are derived 2. any of a class of compounds derived from pyrone …   English World dictionary

  • pyrone — ● pyrone nom féminin Composé hétérocyclique C5H4O2, dérivé des pyrannes. Nom générique des dérivés de ces composés …   Encyclopédie Universelle

  • Pyrone — Pyrone,   Pyrane …   Universal-Lexikon

  • Pyrone — pyran 2 one pyran 4 one Les pyrones …   Wikipédia en Français

  • Pyrone — Pyrones or pyranones are a class of cyclic chemical compounds. They contain an unsaturated six membered ring containing one oxygen atom and a ketone functional group. There are two isomers denoted as 2 pyrone and 4 pyrone. The 2 pyrone structure… …   Wikipedia

  • pyrone — ˈpīˌrōn noun ( s) Etymology: International Scientific Vocabulary pyr + one 1. : either of two isomeric carbonyl compounds C5H4O2 derived from pyran: a. : an oily liquid delta lactone; 2H pyran 2 one calle …   Useful english dictionary

  • pyrone — pironas statusas T sritis chemija formulė (O=)C₅H₄O atitikmenys: angl. pyrone rus. пирон ryšiai: sinonimas – piranonas …   Chemijos terminų aiškinamasis žodynas

  • pyrone — /puy rohn, puy rohn /, n. Chem. either of two heterocyclic ketones having the formula C5H4O2. [1890 95; PYR + ONE] * * * …   Universalium

  • pyrone — noun Any of a class of cyclic chemical compounds that contain an unsaturated six membered ring with one oxygen atom and a ketone functional group. Syn: pyranone …   Wiktionary

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