Method by which Aniline cannot be prepared is :

  • Option 1)

    hydrolysis of phenylisocyanide with acidic solution.

  • Option 2)

    degradation of benzamide with bromine in alkaline solution.on.

  • Option 3)

    reduction of nitrobenzene with H2/Pd in ethanol.

  • Option 4)

    potassium salt of phthalimide treated with chlorobenzene followed by hydrolysis with aqueous NaOH solution.

 

Answers (1)

As we learnt in

Gabriel Phthalimide Synthesis -

Further alkylation can be stopped and a pure primary amine can be obtained by alkylation of phthalimide ( Gabriel synthesis ) followed by hydrolysis.

- wherein

 

 Gabrief Alkalimide synthesis of primary amines. 

Because there exist partial double between chlorine and carbon.

 


Option 1)

hydrolysis of phenylisocyanide with acidic solution.

Incorrect

Option 2)

degradation of benzamide with bromine in alkaline solution.on.

Incorrect

Option 3)

reduction of nitrobenzene with H2/Pd in ethanol.

Incorrect

Option 4)

potassium salt of phthalimide treated with chlorobenzene followed by hydrolysis with aqueous NaOH solution.

Correct

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