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Assertion: Gabriel phthalimide reaction ...

Assertion: Gabriel phthalimide reaction can be used to prepare aryl and alkyl amines.
Reason: Aryl halides have same reactivity as alkyl halides towards nucleophilic substitution reactions.

A

If both assertion and reason are true, and reason is the true explanation of the assertion.

B

If both assertion and reason are ture, but reason is not the true explanation of the assertion.

C

If assertion is true, but reason is false.

D

If both assertion and reason are false.

Text Solution

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The correct Answer is:
To analyze the given assertion and reason, we will break down the statements and evaluate their validity step by step. ### Step 1: Understanding the Assertion **Assertion:** Gabriel phthalimide reaction can be used to prepare aryl and alkyl amines. - The Gabriel phthalimide reaction is a well-known method for synthesizing primary amines. It involves the reaction of phthalimide with an alkyl halide (R-X) to form a primary amine after hydrolysis. - However, it is important to note that this reaction is primarily effective for preparing **alkyl amines**. The reaction does not work well for aryl halides due to the stability of the aryl halide bond, which is less reactive towards nucleophilic substitution compared to alkyl halides. **Conclusion:** The assertion is **false** because the Gabriel phthalimide reaction is not suitable for preparing aryl amines. ### Step 2: Understanding the Reason **Reason:** Aryl halides have the same reactivity as alkyl halides towards nucleophilic substitution reactions. - Aryl halides (like bromobenzene) have a C-X bond (where X is a halogen) that exhibits partial double bond character due to resonance with the aromatic ring. This makes the C-X bond stronger and less reactive towards nucleophilic substitution reactions compared to alkyl halides. - In contrast, alkyl halides (like bromoethane) can undergo nucleophilic substitution reactions more readily, especially primary and secondary alkyl halides. **Conclusion:** The reason is **false** because aryl halides do not have the same reactivity as alkyl halides; they are generally less reactive towards nucleophilic substitution. ### Final Conclusion Both the assertion and the reason are false. ### Answer: Both the assertion and reason are false statements. ---

To analyze the given assertion and reason, we will break down the statements and evaluate their validity step by step. ### Step 1: Understanding the Assertion **Assertion:** Gabriel phthalimide reaction can be used to prepare aryl and alkyl amines. - The Gabriel phthalimide reaction is a well-known method for synthesizing primary amines. It involves the reaction of phthalimide with an alkyl halide (R-X) to form a primary amine after hydrolysis. - However, it is important to note that this reaction is primarily effective for preparing **alkyl amines**. The reaction does not work well for aryl halides due to the stability of the aryl halide bond, which is less reactive towards nucleophilic substitution compared to alkyl halides. ...
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