4-Pyrone

  • 4H- pyran -4-one
  • γ -pyrone

Light yellow solid

Fixed

1.190 g · cm -3 ( 25 ° C)

32-34 ° C

210-215 ° C

Template: Infobox chemical / molecular formula search available

4- pyranone is a chemical compound from the group of pyrones. It occurs as a basic structure of some chemical compounds such as maltol and coumarins.

Production and representation

4- pyranone can be obtained by cyclocondensation of the diacetal of the 3-keto -1 ,5- pentandialdyds under acidic conditions (sulfuric acid and ethanol).

General can be obtained by cyclocondensation of 1,3,5- tricarbonyl compounds 4- pyranones.

Properties

4- pyranone is a light yellow solid. Light exposure it converts to 2 -pyrone.

14145
de