Chemistry Question on Organic Chemistry- Some Basic Principles and Techniques

Question

Which one of the following is most reactive towards electrophilic attack ?

Answer 1

Solution

The group showing electron-donating effect (such as -NH $_2$ , -OH) should stabilise the intermediate ions, i.e. makes the ring more reactive towards electrophilic substitution than benzene and are called activating group while electron withdrawing group (such as - $Cl, NO_ 2$ ) increases the positive charge on ring, thus deactivates the ring. Hence, phenol is more readily attacked by an electrophile