1. Tardigrade
  2. Question
  3. Chemistry
  4. Assertion 2-butenal lacks enolisable H-atom, α to carbonyl group, still it has sufficient acidic character. ReasonThe conjugate base of 2-butenal is stabilised by resonance.

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Q. Assertion $2$-butenal lacks enolisable H-atom, $\alpha$ to carbonyl group, still it has sufficient acidic character.
ReasonThe conjugate base of $2$-butenal is stabilised by resonance.

Aldehydes Ketones and Carboxylic Acids

Solution:

$2$-butenal contains $\gamma$-H atoms and the conjugate base obtained after the removal of $\gamma- H$ atom, is stabilised by resonance. Hence, $2$-butenal is sufficiently acidic. However, it lacks enolisable H-atom $\alpha$ to carbonyl group.

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