Electrophilic substitution reaction
An aromatic electrophilic substitution reaction
is a chemical reaction
in which the aromatic ring
has a planar structure with a closed conjugation
. It has pi-electrons which are mobile.
When the electrophile approaches the aromatic ring, the electrons are displaced. The structure gets charged due to electromeric/mesomeric effect.
This leads to the formation of a pi-complex.
Formation of a complex is followed by the formation of Sigma Complex. The Sigma Complex is stable due to resonance taking place.
The Attacking Groups can be classified as:
- Activating Groups