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The Gabriel phthalimide synthesis is a highly specialized reaction. Why is this method strictly unsuAmines Chemistry Question

Question

The Gabriel phthalimide synthesis is a highly specialized reaction. Why is this method strictly unsuitable for the laboratory synthesis of primary aromatic amines such as aniline?

Answer: C

💡 Solution & Explanation

The critical second step of the Gabriel synthesis requires the phthalimide anion to nucleophilically attack an alkyl halide via an $S_N2$ mechanism. Aryl halides possess profound partial double bond character at the $C-X$ bond due to resonance, rendering them highly inert to standard nucleophilic substitution, effectively stopping the synthesis.

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