Give complete structural formulas of the following compounds
(i) 3-Amino butanal and (ii) 5-Oxohex-2-enamide

Explanation

(i) There are four carbon atoms in its longest continuous chain. Aldehydic group being chain terminating group, it is at carbon atom 1. The amino group is at 3rd carbon atom.
`H- underset(underset(H)(|))overset(overset(H)(|))(C )- underset(underset(H)(|))overset(overset(NH_(2))(|))(C )- underset(underset(H)(|))overset(overset(H)(|))(C )- overset(overset(H)(|))(C ) (or ) CH_(3) - overset(overset(NH_(2))(|))(CH)-CH_(2) - CHO`
(ii) There are six carbon atoms in its longest continuous chain. Amide group is chain terminating. Double bond is at second carbon and keto group at fifth carbon atom.
`H-underset(underset(H)(|))overset(overset(H)(|))(C ) - overset(overset(O)(||))(C )- underset(underset(H)(|))overset(overset(H)(|))(C )-overset(overset(H)(|))(C )= overset(overset(H)(|))(C )- overset(overset(NH_(2))(|))(C )= O (or) CH_(3) - CO-CH_(2) - CH= CH-CONH_(2)`