Question

In order to prepare a $1^{\circ }$ amine from an alkyl halide with simultaneous addition of one $C{H}_2$ group in the carbon chain, the reagent used as source of nitrogen is

• A. Sodium amide,$NaN{H}_2$
• B. Potassium cyanide, $KCN$
• C. Potassium phthalimide, $C_6{H}_4(CO{)}_2{N}^{-}{K}^{+}$
• D. Sodium azide, $Na{N}_3$

Answer 1

The correct option is B Potassium cyanide, $KCN$

Analyzing the options

Option (A):
Reaction of Alkyl halide with sodium amide


Option (B):

Reaction of Alkyl halide with sodium azide


Option (C):
Preparation of 1° amine from alkyl halide:



So, the reagent used for the preparation of a $1^{\circ }$ amine from an alkyl halide with simultaneous addition of one $C{H}_2$ group in the carbon chain is potassium cyanide, $KCN$.


Option (D):
This reaction is known as Gabriel Phthalimide synthesis.





Hence, the correct answer is option (C)