Give reasons for the following : (i) Aniline does not undergo Friedal-Craftsreaction. (ii) (CH_(3))_(2)NH is more basic than (CH_(3))_(3)N in an aqueous solution. (iii) Primary amines have higher boiling point than tertiary amines.

Give reasons for the following : (i) Aniline does not undergo Friedal

1.	Give reasons for the following : (i) Aniline does not undergo Friedal-Craftsreaction. (ii) (CH_(3))_(2)NH is more basic than (CH_(3))_(3)N in an aqueous solution. (iii) Primary amines have higher boiling point than tertiary amines.
Answer» Solution :(i) ANILINE does not undergo Friedel-Crafts reaction because the catalyst `AlCl_(3)` used in the reaction reacts with the amino group which no longer remains an ACTIVATING group. (II) Protonated secondary amine is more stabilised than protonated tertiary amine by soalvation. That is why `(CH_(3))_(2)NH` is more basic than `(CH_(3))_(3)N`. (iii) Intermolecular hydrogen bondingtakes place in PRIMARY amine which raises the boiling point. There is no hydrogen on NITROGEN in tertiary amine and no hydrogen bonding is possible in tertiary amine.