Which of the following compounds is an enol of compound X drawn below?

Name: Which of the following compounds is an enol of compound X drawn below?
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Question

Quizplus · Accepted Answer

I and II are enols of compound X because they both have a double bond between the carbon and oxygen, and a hydroxyl group attached to one of the carbons in the double bond. III does not have this structure and is not an enol of compound X. Therefore, the best choice is D) Only I and II.

Which of the Following Compounds Is an Enol of Compound