Alkynol

In organic chemistry, alkynols (hydroxyalkynes) are organic compounds that contain both alkyne and alcohol functional groups. Thus, as structural features, they have a C≡C triple bond and a hydroxyl group. Some alkynols play a role as intermediates in the chemical industry.

The shortened term ynol typically refers to alkynols with the hydroxyl group affixed to one of the two carbon atoms composing the triple bond (C≡C−OH), the triple-bond analogues to enols.^[1] Ynols can tautomerize to ketenes.

The deprotonated anions of ynols are known as ynolates, the triple-bond analogues to enolates.