Section 11: Chemistry of Benzene136 Section 11: Chemistry of Benzene 11.1 Electrophilic Aromatic Substitution •We recall from our earlier discussion of the aromaticity of benzene that benzene does not undergo addition reactions with electrophiles. •However, benzene does undergo substitution reactions with a wide range of electrophiles – electrophilic aromatic substitution is the most common reaction a benzene ring can undergo. 11.1.1 Generalized Mechanism•The mechanism of substitution is a two-step process, where E+is the electrophilic species:
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