SEARCH Articles Figures Tables Aromatic protons Aromatic protons, exchange Aromaticity electrophilic aromatic substitution Aromatics electrophilic substitution By protonation Electrophile Electrophilic aromatic substitution Electrophiles protonation Electrophilic aromatic protonation Exchanges substitutions Proton exchange Substitution electrophilic aromatic Substitution electrophilic aromatic substitutions