Question

Assertion (A): Aromatic primary amines cannot be prepared by Gabriel Phthalimide synthesis. Reason (R): Aryl halides do not undergo nucleophilic substitution reaction with the anion formed by phthalimide.

• A. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Assertion (A) is false, but Reason (R) is true.

Hint:

The Gabriel synthesis is a way of synthesizing primary amines from alkyl halides, but does not work effectively with aryl halides due to their poor reactivity in nucleophilic substitution reactions.

Answer 1

The Correct Option is B

The Gabriel phthalimide synthesis prepares primary amines but is ineffective for aromatic amines. Aryl halides resist nucleophilic substitution by the phthalimide anion because they lack a good leaving group. However, this deficiency does not explain why aromatic primary amines cannot be synthesized via this method.
Step 2: Therefore, both Assertion (A) and Reason (R) are factually correct, but Reason (R) does not accurately elucidate Assertion (A).