Basic nature depends on the ability to donate lone pair of electrons by the atoms present in the species. Structure (III) is most basic as in that, \(-\mathrm{NH}_{2}\) group is not directly bonded with the benzene ring. (aliphatic amine) Structure (II) is 2nd most basic due to presence of \(-\mathrm{OCH}_{3}\) group in benzene ring at para position. Structure (I) is next basic species which is less basic than (III) and (II) but more basic than structure (I) due to presence of electron releasing \(\left(-\mathrm{CH}_{3}\right)\) group attached to \(-\mathrm{NH}\) group. Structure IV is least basic, because \(-\mathrm{NH}_{2}\) group is directly bonded to the benzene ring, thus lone pair of electrons on \(\mathrm{N}\) - atom is involved in resonance. Hence correct order is, (III) \(>\) (II) \(>\) (I) \(>\) (IV) .
Basic nature depends on the ability to donate lone pair of electrons by the atoms present in the species. Structure (III) is most basic as in that, \(-\mathrm{NH}_{2}\) group is not directly bonded with the benzene ring. (aliphatic amine) Structure (II) is 2nd most basic due to presence of \(-\mathrm{OCH}_{3}\) group in benzene ring at para position. Structure (I) is next basic species which is less basic than (III) and (II) but more basic than structure (I) due to presence of electron releasing \(\left(-\mathrm{CH}_{3}\right)\) group attached to \(-\mathrm{NH}\) group. Structure IV is least basic, because \(-\mathrm{NH}_{2}\) group is directly bonded to the benzene ring, thus lone pair of electrons on \(\mathrm{N}\) - atom is involved in resonance. Hence correct order is, (III) \(>\) (II) \(>\) (I) \(>\) (IV) .
Basic nature depends on the ability to donate lone pair of electrons by the atoms present in the species. Structure (III) is most basic as in that, \(-\mathrm{NH}_{2}\) group is not directly bonded with the benzene ring. (aliphatic amine) Structure (II) is 2nd most basic due to presence of \(-\mathrm{OCH}_{3}\) group in benzene ring at para position. Structure (I) is next basic species which is less basic than (III) and (II) but more basic than structure (I) due to presence of electron releasing \(\left(-\mathrm{CH}_{3}\right)\) group attached to \(-\mathrm{NH}\) group. Structure IV is least basic, because \(-\mathrm{NH}_{2}\) group is directly bonded to the benzene ring, thus lone pair of electrons on \(\mathrm{N}\) - atom is involved in resonance. Hence correct order is, (III) \(>\) (II) \(>\) (I) \(>\) (IV) .
Basic nature depends on the ability to donate lone pair of electrons by the atoms present in the species. Structure (III) is most basic as in that, \(-\mathrm{NH}_{2}\) group is not directly bonded with the benzene ring. (aliphatic amine) Structure (II) is 2nd most basic due to presence of \(-\mathrm{OCH}_{3}\) group in benzene ring at para position. Structure (I) is next basic species which is less basic than (III) and (II) but more basic than structure (I) due to presence of electron releasing \(\left(-\mathrm{CH}_{3}\right)\) group attached to \(-\mathrm{NH}\) group. Structure IV is least basic, because \(-\mathrm{NH}_{2}\) group is directly bonded to the benzene ring, thus lone pair of electrons on \(\mathrm{N}\) - atom is involved in resonance. Hence correct order is, (III) \(>\) (II) \(>\) (I) \(>\) (IV) .
