question_answer

Which of the following would react most readily with nucleophiles?

A)                                                                    

B)

C)                                                                   

D)

Correct Answer: C

Solution :

Nucleophile always attacks on electron deficient site. Presence of electron withdrawing group such as \[\frac{\pi }{6}\]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 R or OR increase the electron density, thus deactivate the nucleus toward nucleophilie attack. \[\frac{\pi }{2}\]group activate the ring more than Cl toward nucleophilic attack hence  react readily with nucleophile.