Which of the following would react most readily with nucleophiles ?

Question

Which of the following would react most readily with nucleophiles ? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Nucleophile always attacks on electron deficient site.

Presence of electron withdrawing groups such as

N O_{2}, C H O

etc decreases the electron density on benzene nucleus, hence such groups activate the ring towards nucleophilic attack. While presence of electron releasing groups such as

R

or

OR

increases the electron density, thus deactivates the nucleus towards nucleophilic attack.

N O_{2}

group activates the ring more than

Cl

towards nucleophilic attack,

Q. Which of the following would react most readily with nucleophiles ?