Why does aniline not undergo Friedel-Crafts reaction?
Aniline’s nitrogen forms a salt with AlCl₃ (Lewis acid catalyst), acquiring a positive charge and deactivating the ring for electrophilic substitution.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Alkylation, Acylation and Electrophilic Substitution