In case of aniline we have NH2 group attached to it which acts as a deactivating group towards the electrophilic substitution reaction. Moreover it behaves as Lewis base on reacting with AlCl3 . As shown below.
C6H5NH2 + AlCl3 → C6H5N+H2AlCl3+
Why aniline does not give Friedel-craft’s reaction ?
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