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(A) Gabriel phthalimide synthesis is used for the preparation of aliphatic primary amines without the loss of carbons. It involves nucleophilic substi

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Gabriel method

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(A) Gabriel phthalimide synthesis is used for the preparation of aliphatic primary amines without the loss of carbons. It involves nucleophilic substitution $(S_{N}2)$ of alkyl halides by the anion formed by the phthalimide.Phthalimide on treatment with ethanolic $KOH$ forms potassium salt of phthalimide which on heating with $RX$ followed by either alkaline hydrolysis or hydrazinolysis with hydrazine produces the corresponding $1^{\circ}$ amine.

Find the suitable method from the following to prepare primary amines without the loss of carbons.

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