Advertisements
Advertisements
प्रश्न
Account for the following:
Aniline does not undergo Friedel-Crafts reaction.
Advertisements
उत्तर
Aniline being a Lewis base reacts with Lewis acid AlCl3 to form a salt.
\[\ce{C6H5\overset{\bullet\bullet}{N}H2 + AlCl3 -> C6H5\overset{+}{N}H2AlCl^-_3}\]
Due to the presence of a positive charge on N-atom in the salt, the group \[\ce{-\overset{+}{N}H2AlCl^-_3}\] acts as a strongly deactivating group. As a result, it reduces the electron density in the benzene ring and inhibits the electrophilic substitution reaction. Therefore, aniline does not undergo the Friedel-Crafts reaction.
संबंधित प्रश्न
Which one of the following nitro compounds does not react with nitrous acid?
What happens when 2-Nitropropane boiled with HCl?
What happens when Nitrobenzene undergoes electrolytic reduction in a strongly acidic medium?
What happens when oxidation of tert-butylamine with KMnO4?
Arrange the following.
In increasing order of basic strength aniline, p-toluidine and p-nitro aniline
Arrange the following.
In increasing order of basic strength C6H5NH2, C6H5NHCH3, C6H5NH2, p-Cl-C6H4-NH2
Identify A, B and C.
Identify A to E in the following sequence of reactions.
Account for the following:
Aniline does not undergo Friedel – Crafts reaction.
Account for the following.
Aniline does not undergo Friedel – Crafts reaction.
