Ncert Exercises & Solutions

Amongst the given set of reactants, the most appropriate for preparing 2^o amine is

1. 2^o R - Br + NH3
2. 2^oR — Br + NaCN followed by H₂/Pt
3. 1^o R — ${NH}_{2}$ + RCHO followed by H_2/Pt
4. 1^o R — Br(2 mol) + potassium phthalimide followed by $H_{3}$ O⁺/ heat

Hint: Nucleophilic addition reaction followed by reduction.

In the first reaction, nucleophilic addition reaction takes place and in the second step reduction reaction takes place.

The chemical transformation is as follows:

While other given set of reactants give primary amine only.

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