Question

A compound shows an IR peak at 1740 cm-1. Its proton NMR spectrum consists of L.06 ppm, t, 6H2.03 ppm, quintet, 2H, 2.40 ppm, t 4H and 2.45 ppm, 4. 4H. The most likely structure is Question 10 (4 points) Friedel-Crafts acylation reactions cannot be performed on aniline because: The amino group attacks the Lewis acid to form an acid-base complex in which the aromatic ring is strongly deactivated The amino group is strongly activating and multiple substitutions occur on the aromatic ring. The amino group gets acylated instead of the aromatic ring, The amino group is strongly deactivating preventing any substitution on the aromatic ring,

Answer 1

Answer:

First question-

The NMR sprectra is for a total of 16 electrons. The only compound having a total of 16 electrons is the first compound- the diketone.

The assignment of peaks are shown below-

Second question-

F-C acylation can not be performed on aniline because the amino group forms a Lewis axid-base complex with the catalyst in which the aromatic ring is strongly deactivated.

Phenol also does not undergo F-C acylation due to the same reason.