The ortho- and para-positions of the benzene ring become electron-rich as a result of the resonance, activating it for electrophilic substitution reactions. As a result, nucleophilic substitution reactions in phenols are uncommon.
The ortho- and para-positions of the benzene ring become electron-rich as a result of the resonance, activating it for electrophilic substitution reactions. As a result, nucleophilic substitution reactions in phenols are uncommon.