Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is

Which is the best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain ? Give mechanism.

Best method for preparing aliphatic primary amines from alkyl halides without changing the number of carbon atoms in the chain is

Give a method of preparation of primary amine from alkyl cyanide.

How will you prepare Primary amines from Alkyl Azide.

Give a method preparation of primary amine.

The best method for the preparation of primary amines is

The best method for the preparation of primary amines is

How are primary amines prepared from –Acid amides containing less number of carbon atom ?