Question
Chemistry Question on Amines
In Friedel-Crafts alkylation of aniline, one gets
A
Alkylated product with ortho and para substitution.
B
Secondary amine after acidic treatment.
C
An amide product.
D
Positively charged nitrogen at benzene ring.
Answer
Positively charged nitrogen at benzene ring.
Explanation
Solution
The correct answer is (D) : Positively charged nitrogen at benzene ring.
Fig.
Lewis acids are electron deficient species and nitrogen atom of aniline has a lone pair of electron. When Lewis acid reacts with aniline, then a salt forms in which nitrogen acquires a positive reaction and further reaction is not possible.