Question

?How can you prepare ethylamine from n-propyl amine

Answer 1

:The chemical formula of Ethylamine is

CH₃CH₂NH₂

:The chemical formula of n-propyl amine is

CH₃CH₂CH₂NH₂

?How can you prepare ethylamine from n-propyl amine

a- Oxidation of n-propylamine by KMnO₄ 

In presence of an base n-propylamine is oxidized to give Propanal

b- Oxidation of Propanal in acidic conditions

Aldehydes are readily oxidized to carboxylic acids

CH₃CH₂CHO → CH₃CH₂COOH

C- Reaction between Propionic acid and ammoina to give amide

 d- Hofmann Rearrangement

Amides with no substituent on the nitrogen react with solutions of bromine or chlorine in sodium hydroxide to yield amines through loss of their carbonyl carbon by a reaction known as the Hofmann rearrangement