An unknown compound A has the molecular formula C₁₂H₁₆O.Compound A absorbs strongly in the IR at 1700 cm^-1.The NMR spectral data for compound A are given below.What is the structure of compound A?

Question

Quizplus · Accepted Answer

- The NMR spectrum shows a triplet at 0.8 ppm with an integration of 3H, which indicates the presence of a methyl group.
- There is also a quartet at 2.2 ppm with an integration of 2H, which indicates the presence of a methylene group.
- The IR absorption at 1700 cm^-1 indicates the presence of a carbonyl group, most likely a ketone.
- Putting all of these pieces of information together, we can construct the structure of compound A as shown in choice II.

An Unknown Compound a Has the Molecular Formula C12H16O

An Unknown Compound a Has the Molecular Formula C₁₂H₁₆O