S_NAr Mechanism: Nucleophilic Aromatic Substitution via Meisenheimer Complex
Learn SNAr (addition–elimination) on aromatic rings. Why you need an EWG (NO2) ortho/para to the leaving group, Meisenheimer intermediate, and product prediction.
Reaction: Ar–X + Nu− → Ar–Nu
What it does: Substitutes leaving group on aromatic ring under nucleophilic conditions
Typical reagents: Nu− (e.g., MeO−, NH2−) on nitro-activated aryl halides