What is the structure of the compound in the following ¹H-NMR spectrum with the molecular formula C₉H₁₈O₂ and characteristic ¹³C-NMR peaks at 11.3,21.6,25.3,49.4,67.1,and 175.5 ppm? Relative integration is shown.

Question

Quizplus · Accepted Answer

The ¹C-NMR spectrum shows peaks at 11.3 ppm and 21.6 ppm, which are characteristic of an aldehyde group (CHO). The peak at 175.5 ppm is characteristic of a carbonyl group (C=O). The peak at 67.1 ppm is characteristic of an ether group (R-O-R), and the peak at 49.4 ppm is characteristic of an sp3 hybridized carbon (such as CH2). The peaks at 25.3 ppm may be from an alkyl group. The molecular formula (C₉H₁₈O₂) contains 19 carbons, suggesting that there may be multiple branches and/or rings in the structure. Based on these observations, choice B, with a structure that contains an aldehyde, ether, and carbonyl group as well as multiple branches and/or rings, is the best choice.

What Is the Structure of the Compound in the Following