Ramesh V
Last Activity: 15 Years ago
An electrophilic substitution reaction on benzene does not always result in monosubstitution. While electrophilic substituents usually withdraw electrons from the aromatic ring and thus deactivate it against further reaction, a sufficiently strong electrophile can perform a second or even a third substitution. This is especially the case with the use of catalysts.
benzene doesnt react by addition : It would destroy aromatic stabilisation
Aromatic compounds react by substitution reactions.
These preserve the stability of aromatic sextet ( i.e., overall it remains aromatic )
--
regards
Ramesh