General Mechanism

Electrophilic Aromatic Substitution of Class 12

General Mechanism

Step-1: The electrophile (E+) attacks the ring, removing a pair of electrons from the sextet to give a carbocation which is a resonance hybrid as shown in step−1. Ions of this type are called Wheland intermediate, σ− complexes or arenium ions.

General Mechanism

Step-2: The arenium ions loses a proton from the carbon atom that bears the electrophile.

General Mechanism

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