Explain why nucleophilic substitution reactions are not very common in phenols.
For the feasibility of a nucleophilic substitution reaction, the compound present should be able to uptake the nucleophile involved, but in the case of phenols, the resonance effect on bond gives its electron to the benzene ring making the electron density very high. Due to this high electron density, nucleophiles are repelled and are not able to substitute any atom from the phenol compound.