Question

in order to prepare a 1°amine from an alkyl halide with simultaneous addition of one CH2 group in the carbon chain. what will be the name of Reagent used as source of Nitrogen ​

Answer 1

Potassium cyanide, KCN

Answer 2

Answer:

In the given reaction, the reagent can be used as source of nitrogen is potassium cyanide KCN.

Explanation:

To prepare the primary amine from an alkyl halide:

• During the reaction of alkyl halide R-X with KCN. The nucleophilic substitution reaction occurs when cyanide ion attacks on electrophilic carbon of alkyl halide as nucleophile. This reaction leads to the formation of alkyl nitrile.

                 $R-X+KCN$  →   $R-CN$

• Reaction of alkyl nitrile with Na-C₂H₅OH leads to formation of primary amine with one extra carbon from the starting alkyl halide.

                $R-CN +Na/C_{2}H_{5}OH$  →  $RCH_{2}NH_{2}$

Therefore the KCN is the source of nitrogen in the given conversion.