Chapter 12 :Reactions of Arenes. Electrophilic Aromatic
The structure and properties of aromatic systems
were discussed in Chapter 11. Now it
is time to visit their chemical reactions.
The arene system contains an electron rich C=C system which react with
electrophiles via a substitution pathway (to preserve aromaticity) via what
is known as electrophilic aromatic substitution (EArS):
What does the term "electrophilic aromatic substitution" actually imply ?
Electrophilic aromatic substitution
reactions are the very important class of reactions that allow the introduction
of substituents onto arenes.
- An electrophile, E+, is an electron poor species
that will react with an electron rich species (the arene)
- Aromatic because the reaction is characteristic of aromatic systems.
- A substitution implies that a group is replaced (usually H).
Electrophilic Aromatic Substitution