Which of the given compounds can exhibit taut | vedclass

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Question

(C) Tautomerism in carbonyl compounds generally requires the presence of an $\alpha$-hydrogen atom.$I$: This compound has an $\alpha$-hydrogen atom ad

Vedclass · Accepted Answer

$I, II$ and $III$

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(C) Tautomerism in carbonyl compounds generally requires the presence of an $\alpha$-hydrogen atom.$I$: This compound has an $\alpha$-hydrogen atom adjacent to the carbonyl group,so it can exhibit keto-enol tautomerism.$II$: This compound also possesses an $\alpha$-hydrogen atom adjacent to the carbonyl group,allowing it to exhibit keto-enol tautomerism.$III$: Although this compound lacks an $\alpha$-hydrogen,it can exhibit $\gamma$-tautomerism (also known as $p$-tautomerism) because it has a conjugated system where a $\gamma$-hydrogen can participate in the tautomeric shift.Therefore,all three compounds ($I, II$,and $III$) can exhibit some form of tautomerism.

Which of the given compounds can exhibit tautomerism?

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