An unknown compound A has the molecular formula C₇H₁₄O₂.Compound A absorbs strongly in the IR at 1700 cm^-1.The ¹H NMR spectral data for compound A are given below.What is the structure of compound A? A)I B)II C)III D)IV

Question

Quizplus · Accepted Answer

The IR absorption at 1700 cm-1 suggests a carbonyl group. The 1H NMR spectrum indicates the presence of a singlet at 9.7 ppm (1H) which corresponds to an aldehyde proton. The remaining signals suggest the presence of a benzene ring, an ethyl group, and a long-chain alkyl group with the formula C16H32. Compound C fits this description, with a molecular formula of C17H26O.

An Unknown Compound a Has the Molecular Formula C7H14O2

An Unknown Compound a Has the Molecular Formula C₇H₁₄O₂