Which one is the strongest nucleophilic site in the following species?

Question

Which one is the strongest nucleophilic site in the following species? <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/125090ea8d4424251c457eb2d4b938ee-.jpeg" /> (A) 1 (B) 2 (C) 3 (D) 4

Tardigrade Admin · Accepted Answer

In 4th negative charge is not taking part in conjugation.

Q. Which one is the strongest nucleophilic site in the following species?

$1$

$2$

$3$

$4$

In 4th negative charge is not taking part in conjugation.