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  4. Which one of the nitrogen atoms in is the most nucleophilic ?

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Q. Which one of the nitrogen atoms in is the most nucleophilic ?Chemistry Question Image

KCETKCET 2011Amines

Solution:

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Electron present on nitrogen atom II and III takes part in conjugation with carbonyl group. Hence, due to this reason availability of electron present on these nitrogen atom decreases simultaneously nucleophilicity decreases. While electron present on nitrogen atom (I) do not take part in conjugation and are most nucleophilic in nature.