Which of the following methods of preparation of amines will not give same number of carbon atoms in the chain of amines as in the reactant?

Options

A. Reaction of alkyl nitrile with `LiAIH_4`
B. Reaction of amide with `LiAIH_4` followed by treatment with water
C. Heating alkyl halide with potassium salt of phthalimide followed by hydrolysis
D. Treatment of amide with bromine in aqeous solution of sodium hydroxide

Answer

D

Explanation

Only treatment of amide with `Br_2` in aqueous solution of NaOH will give an amine with lesser number of carbon atoms than in the reactant while all the remaining reactions give an amine with the same number of carbon atoms as in the reactant. `RCONH_2 overset(Br_2//NaOH)to RNH_2`