4-Pyrone

4-Pyrone (γ-pyrone or pyran-4-one) is an unsaturated cyclic chemical compound with the molecular formula C₅H₄O₂.It is isomeric with 2-pyrone.

Preparation

4-Pyrone is prepared via the thermal decarboxylation of chelidonic acid.

Reactions

4-Pyrone and its derivatives react with amines in protic solvents to form 4-Pyridones.

Derivatives

4-Pyrone forms the central core of several natural chemical compounds, including maltol, meconic acid, kojic acid, and of the important class of the Flavones.

File:Maltol.svg	File:KojicAcid.png
Maltol	Kojic acid

See also

• Pyrone
• 4-Pyridone
• Dehydroacetic acid