Carboxylic Acids And Its Derivatives

A sweet smelling organic compound \([\mathrm{A}]\left(\mathrm{C}_9 \mathrm{H}_{10} \mathrm{O}_2\right)\) undergoes acid hydrolysis to form an acid [B].

Compound [B] further reacts with Ammonia followed by heating to yield [C].

Compound \([\mathrm{C}]\) when reacted with \(\mathrm{Br}_2\) in caustic potash gave compound \([\mathrm{D}]\left(\mathrm{C}_6 \mathrm{H} 7 \mathrm{~N}\right)\) which gives a white precipitate with aqueous \(\mathrm{Br}_2\).

Identify compounds \([\mathrm{A}]\) & \([\mathrm{D}]\)