Choose the most reasonable reaction intermedi | vedclass

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(C) The reaction shown is a base-catalyzed isomerization of an $\alpha,\beta$-unsaturated ketone. The first step in the presence of a base $(HO^-)$ is

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(C) The reaction shown is a base-catalyzed isomerization of an $\alpha,\beta$-unsaturated ketone. The first step in the presence of a base $(HO^-)$ is the nucleophilic attack of the hydroxide ion on the carbonyl carbon to form a hydrate intermediate. This is followed by an intramolecular acid-base reaction,leading to the formation of the more stable isomer. Therefore,the hydrate is the most reasonable intermediate in this specific mechanism.

Choose the most reasonable reaction intermediate for the following reaction.

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