Tropolone

Tropolone is a derivative of tropone with a hydroxyl group in the 2-position.

Two methods for the synthesis of tropolone are by bromination of 1,2-cycloheptanedione with N-bromosuccinimide followed by dehydrohalogenation at elevated temperatures and by acyloin condensation of the ethyl ester of pimelic acid the acyloin again followed by oxidation by bromine.
 * [[Image:TropoloneGenSynth.png|left|400px|Tropolone synthesis]]

It is a grape polyphenol oxidase inhibitor.