Pyrone
Class of chemical compounds
Pyrones or pyranones are a class of heterocyclic chemical compounds. They contain an unsaturated six-membered ring, which has one oxygen atom and a carbonyl functional group. There are two isomers, denoted as 2-pyrone and 4-pyrone. The 2-pyrone (or α-pyrone) structure is a lactone and is found in nature as part of the coumarin ring system. The 4-pyrone (or γ-pyrone) structure is an ether, ketone found in some natural chemical compounds such as chromone, maltol and kojic acid.
3-pyrones are zwitterionic, unstable carbonyl ylides. They intermediate some cycloadditions.
Sources and credits
This article is adapted from the Wikipedia article “Pyrone”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- 2-Pyranone.png by Edgar181, Public domain
- 4-Pyranone.png by Edgar181, Public domain
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