Chemistry - AMINES Question with Solution | TestHub

There are 3 tertiary amines among the given structures: (iv), (v), and (vi).

Classification rule: Amines are classified as tertiary ($3^{\circ }$) when the nitrogen atom is directly bonded to 3 carbon atoms.

Structure (iv): The bridgehead nitrogen is bonded to 3 different carbons within the fused ring system.

Structure (v): The nitrogen at the bridgehead position is connected to 3 carbon chains.

Structure (vi): Triethylamine has a central nitrogen attached to 3 ethyl groups.

Structures (i), (ii), and (vii) are primary ($1^{\circ }$) amines, while (iii) and (viii) are secondary ($2^{\circ }$) amines.