Which of the following is vinylic alcohol?

Which of the following is vinylic alcohol?
  1. Prop-2-en-1-ol
  2. But-2-en-2-oI
  3. But-3-en-2-ol
  4. 2-Methylbut-3-en-2-ol

Solution

In vinylic alcohol, $-\mathrm{OH}$ group is attached to a $\mathrm{sp}^2$ hybridised carbon atom which is part of a carbon-carbon double bond.
But-2-en-2-ol is a vinylic alcohol.

Asked in: MHT CET 2023 (13 May Shift 2)

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