Electrophilic aromatic substitution reactions are organic reactions wherein an electrophile replaces an atom which is attached to an aromatic ring. Commonly, these reactions involve the replacement of a hydrogen atom belonging to a benzene ring with an electrophile.
The aromaticity of the aromatic system is preserved in an electrophilic aromatic substitution reaction. For example, when bromobenzene is formed from the reaction between benzene and bromine, the stability of the aromatic ring is not lost. This reaction can be illustrated as follows.
Bromination of phenol is solvent dependent reaction i.e. polarity of solvents.
