(a) Identify X and Y in the following :
(b) Amino group is o, p-directing for aromatic electrophilic substitution reactions. Why does aniline on nitration give m-nitroaniline ?
(a)
(b) Amino acids are o- and p- directing for aromatic electrophillic substitution reaction yet on nitration, it gives m- nitroaniline due to protonation of aniline in strongly acidic medium the resulting group being deactivting directs the electrophille to m- position.