Question

how will you prepare propan-1-amine from alkylcynide​

Answer 1

Answer:

Preparation of propan -1- amine from butane nitrile. Butane nitrile treated with acid hydrolysis followed by Hoffmann’s bromamide degradation. gives propan – 1 – amine. 2. Preparation of propan – 1 – amine from propanamide. When propanamide is treated with LiAIH in the presence of water gives propan – 1 – amine. 3. Preparation of propan – 1 – amine from 1 – nitropropane. Reduction of 1 – Nitropropane using H2 / Ni or Fe / HCl gives propan – 1 – amine.Read more on Sarthaks.com - https://www.sarthaks.com/921615/how-will-you-prepare-propan-1-amine-from-1-butane-nitrile

Answer 2

We use two reactions to prepare propan-1-amine .

First we convert butane nitrile to butanamide by partial hydrolysis of butane nitrile.

CH3–CH2-CH2-CN ————— > CH3-CH2-CH2-CONH2.

This reaction is carried in presence of HCl at 40 degrees centigrade.

Then we convert the butanamide to propan-1-amine by Hoffmann bromamide degradation

CH3–CH2-CH2-CONH2 + Br2+4 NaOH →

CH3–CH2-CH2-NH2 + 2Na2CO3+2NaBr+2H2O.