Which of the following compounds is consistent with the following ¹³C NMR spectrum?

Question

Quizplus · Accepted Answer

The NMR spectrum shows 4 distinct signals, indicating that there are 4 different types of protons in the compound. Compound I only has 3 types of protons, so it can be eliminated. Compound II has 5 types of protons, which does not match with the NMR spectrum, so it can also be eliminated. Compound III has 4 types of protons, consistent with the NMR spectrum. Compound IV has 6 types of protons, so it can be eliminated. Therefore, the best choice is Compound III.

Which of the Following Compounds Is Consistent with the Following