Question

State reasons for the following:

Aliphatic amines are stronger bases than aromatic amines.

Answer 1

Aliphatic amines have an alkyl group that raises electron density on the N atom by (+1) induction. This makes the –NH₂ group more basic and attracts a proton.

As a result, the lone pair of electrons in an aromatic amine is involved in the benzene ring’s resonance and cannot display basic character. So, aliphatic amines are more basic than aromatic amines.