MCAT Organic Chemistry Question 100: Answer and Explanation

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Question: 100

10. Which of the following is considered a tautomer of the imine functional group?

  • A. Cyanohydrin
  • B. Hydrazone
  • C. Enamine
  • D. Semicarbazone

Correct Answer: C

Explanation:

All of the answer choices are nitrogen-containing functional groups, but only enamines are tautomers of imines. Imines contain a double bond between a carbon and a nitrogen; enamines contain a double bond between two carbons as well as an amine.

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