ynone
ynone
An α,β-unsaturated ketone of general formula R<small><sup>1</small></sup>C≡C‒C(=O)R<small><sup>2</small></sup> (R<small><sup>2</small></sup> ≠ H) in which the aldehydic C=O function is conjugated to a C≡C triple bond at the α,β position.