Q. Which of the following would react most readily with nucleophiles?
Solution:
Nucleophile always attacks on electron deficient site. Presence of electron withdrawing group such as , CHO etc., decreases the electron density on benzene nucleous, hence such group activates the ring towards nucleophilic attack. While presence of electron releasing groups such as or increase the electron density, thus deactivate the nucleus toward nucleophilie attack. group activate the ring more than Cl toward nucleophilic attack hence react readily with nucleophile.
