Question

Consider the following compounds.
Friedel-Crafts acylation can be used to obtain:

• A. II, III, IV
• B. I, II, IV
• C. I, II, III
• D. I, III, IV

Answer 1

Answer: (B)

I, II, IV

Except (iii) all other compounds will show Friedel craft acylation.

Structure (iii) does not show acylation due to the presence of $-N{O}_2$ and $-COC{H}_3$ groups as both of these groups shown $-M(-R)$ effect, which are deactivating groups. Thus, do not show Friedel-Craft acylation.

Hence, option B is correct.