Write structures and IUPAC names of
the amide which gives propanamine by Hoffmann bromamide recation.

Explanation

(i) Propanamine contains three carbons. Hence, the amide molecule must contain four carbon atoms. Structure and IUPAC name of the starting amide with four carbon atoms are given below:
`CH_(2)-CH_(2) -CH_(2)-underset(O)underset(||)C-NH_(2)` Butanamide
(ii) ) Benzamide is an aromatic amide containing seven carbon atoms. Hence, the amine formed from benzamide is aromatic primary amine containing six carbon atoms.

Aniline or benzenamine.