Chemistry - Aromatic Hydrocarbon Question with Solution | TestHub

The benzene ring to which >NH group is directly attached is activated for the attack of$\mathrm{B}{\mathrm{r}}^{+}$as –NH group is highly ringh activating due to +R effect. the ring to which${\mathrm{}}_{\mathrm{ƒ}}^{\mathrm{‚}}\mathrm{C}=\mathrm{O}$group is directly attached is deactivated towards electrophillic substitution. As${\mathrm{}}_{\mathrm{ƒ}}^{\mathrm{‚}}\mathrm{C}=\mathrm{O}$group is ring deactivating due to –R effect in addition the${\mathrm{}}_{\mathrm{ƒ}}^{\mathrm{‚}}\mathrm{N}\mathrm{H}$group is ortho-para directing but para position is favourable for the attach of$\mathrm{B}{\mathrm{r}}^{+}$. Hence the product formed is as follows