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 with drawing groups such as \[CHO,N{{O}_{2}}\]etc. decreases the electron density on benzene nucleus therefore these groups activate the ring towards nucleophilic attack. On the other hand 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 hence  reacts readily with nucleophile.