Which of the following is a reactive intermediate in the base-catalyzed racemization of (R)-3-phenyl-2-butanone?

Name: Which of the following is a reactive intermediate in the base-catalyzed racemization of (R)-3-phenyl-2-butanone?
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Question

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In the base-catalyzed racemization of ketones, an enolate ion is formed as the reactive intermediate. This occurs through the deprotonation of the alpha carbon next to the carbonyl group, leading to the formation of a resonance-stabilized enolate ion.

Which of the Following Is a Reactive Intermediate in the Base-Catalyzed