Question

Given below are two statements:
Statement I: Aniline does not undergo Friedel-Crafts alkylation reaction.
Statement II: Aniline cannot be prepared through Gabriel synthesis.
In the light of the above statements, choose the correct answer from the options given below

• A. Both Statement I and Statement II are true.
• B. Both Statement I and Statement II are false.
• C. Statement I is correct but Statement II is false.
• D. Statement I is incorrect but Statement II is true

Answer 1

The Correct Option is A

Given below are two statements:

Statement I: Aniline does not undergo Friedel-Crafts alkylation reaction.

Statement II: Aniline cannot be prepared through Gabriel synthesis.

In the light of the above statements, choose the correct answer from the options given below:

Explanation:

Statement I:

Aniline does not undergo Friedel-Crafts alkylation reaction. This is because aniline reacts with the Lewis acid catalyst (like AlCl3) used in the Friedel-Crafts reaction to form a salt. This salt formation creates a positive charge on the nitrogen atom, which deactivates the benzene ring towards electrophilic substitution. Therefore, Statement I is correct.

Statement II:

Aniline cannot be prepared through the Gabriel synthesis. The Gabriel synthesis is primarily used to prepare primary aliphatic amines. Aniline is an aromatic amine, and the reaction conditions of the Gabriel synthesis are not suitable for aryl halides, which are required for the preparation of aromatic amines. Therefore, Statement II is also correct.

Conclusion:

Both Statement I and Statement II are correct.