Write structures and IUPAC names of
(i) the amide which gives propanamine by Hoffmann bromamide reaction
(ii) the alkyl halide used in Garbriel phthalimide synthesis to give ethanamine
(iii) amine obtained by reduction of propanamide
(iv) the amine produced by the Hoffmann degradation of benzamide.

Explanation

### Step-by-Step Solution

**(i) The amide which gives propanamine by Hoffmann bromamide reaction:**

1. **Identify the required amine:** The question states that we need an amide that gives propanamine (C3H9N) upon reaction. Propanamine is a primary amine with the structure CH3-CH2-CH2-NH2.

2. **Determine the corresponding amide:** According to the Hoffmann bromamide reaction, the amide will have one more carbon than the resulting amine. Therefore, to form propanamine, we need an amide with 4 carbons, which is butanamide.

...