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Account for the following : Aniline do...

Account for the following :
Aniline does not undergo Friedel - Crafts reaction.

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Aniline does not undergo Friedel - Crafts reaction : Anhydrous `AlCl_(3)` used in the Friedel-Crafts reaction reacts with aniline and is therefore not available for the reaction.
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Account for the following: (i) pK_(a) of aniline is more than that of methylamine. (ii) Ethylamine is soluble I water whereas aniline is not. (iii) Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide. (iv) Although amino group is o, p-directing in aromatic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline. (v) Aniline does not undergo Friedel-Crafts reaction. (vi) Diazonium salts of aromatic amines are more stable than those of aliphatic amines.

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