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

Question

Which one of the nitrogen atoms in is the most nucleophilic ? (A) III (B) I (C) II (D) All three nitrogen atoms are equally strong nucleophilic centers

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/29ea7627e38ab4e38b925668b98b8c34-.png" /> 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.

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

III

I

II

All three nitrogen atoms are equally strong nucleophilic centers