Ortho- and para-positions to the –NH2 group
become centres of high electron density Thus –NH2 group is ortho
and para directing and a powerful activating group (a) Bromination: Aniline reacts with bromine water at room
temperature to give a white precipitate of 2,4,6-tribromoaniline The main problem encountered during electrophilic substitution
reactions of aromatic amines is that of their very high reactivity