Is 2-pyrone aromatic?
1 Answer
Nov 23, 2015
There is little evidence that 2-pyrone is aromatic.
Explanation:
2-Pyrone is used in organic synthesis as a building block for more complex chemical structures, because it readily undergoes many [4+2]-cycloaddition reactions.
The resulting bicyclic lactones easily lose carbon dioxide to form benzene derivatives.
For example, it readily undergoes a Diels-Alder reaction with hex-3-yne-2,5-dione as follows:
(from www.chemtube3d.com)
