Question

The number of signal(s) in the \( ^1H \) NMR spectrum of the following compound 

recorded at 25°C in \(CDCl_3\) is \(\underline{\hspace{2cm}}\).

Hint:

In \( ^1H \) NMR, different proton environments give rise to distinct signals. Aromatic protons, protons on ester groups, and alkyl protons each appear as separate signals.

Answer 1

Correct Answer: 3

The compound contains functional groups and various types of protons, which will cause different signals in the \( ^1H \) NMR spectrum.
There are distinct protons in the structure: 1. Protons on the benzene ring (aromatic protons) 2. Protons attached to the oxygen atoms in the ester group 3. Protons attached to the carbon-carbon bonds Thus, the number of signals will correspond to the number of different types of protons, leading to a total of 3 signals.