Question

Assertion (A) Aniline does not undergo alkylation and acetylation.
Reason (R) Nitrogen of aniline acquires positive charge in the presence of $AlCl _{3}$.

• A. Both $A$ and $R$ are correct; $R$ is the correct explanation of $A$
• B. Both $A$ and $R$ are correct; $R$ is not the correct explanation of $A$
• C. $A$ is correct; $R$ is incorrect
• D. $R$ is correct; $A$ is incorrect

Answer 1

Answer: (A)

Aniline does not undergo Friedel Crafts reaction (alkylation and acetylation) due to salt formation with $AlCl _{3}$, (the Lewis acid) which is used as a catalyst. Due to this nitrogen of aniline acquires positive charge and hence, act as a strong deactivating group for further reaction.