Chemistry - AMINES Question with Solution | TestHub

Question Explanation:

The question asks for the final product (B) formed when a cyclic compound containing both a carboxylic acid group and an amide group is treated with KOBr, followed by heating.

Concept:

This reaction involves Hofmann Bromamide Degradation and the thermal cyclization of amino carboxylic acids.

Solution:

Hofmann Bromamide Degradation:

1. The –CONH₂ group reacts with KOBr, converting it into an –NH₂ group. This transforms the compound into the corresponding amino acid (A).

2.Heating:

When the resulting γ-amino acid is heated, it undergoes intramolecular cyclization to form a lactam (cyclic amide). Thus, (B) is the cyclic lactam formed from the amino acid (A).