Which of the following are enol forms of ethyl acetoacetate drawn below?

Question

Quizplus · Accepted Answer

All three structures are enol forms of ethyl acetoacetate. The enol form of a keto compound can be identified by the presence of an -OH group in place of a carbonyl group. In this case, all three structures have an -OH group next to a carbonyl group, indicating the presence of an enol form. Hence, the correct answer is D, i.e., all three structures (I, II, and III) are enol forms of ethyl acetoacetate.

Which of the Following Are Enol Forms of Ethyl Acetoacetate