Which of the following represents the correct IUPAC name for the compounds concerned?
But-3-yn-1-ol or But-4-ol-1-yne
Two functional groups – alcoholic and alkyne – are present in the given compound. The principal functional group is the alcoholic group. Hence, the parent chain will be suffixed with ol. The alkyne group is present in the C–3 of the parent chain. Hence, the correct IUPAC name of the given compound is But–3–yn–1–ol.
But-3-yn-l-ol. Lower locant for the principal functional group, i.e., alcohol.