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प्रश्न
Aniline does not give Friedel-Crafts reaction. Give a reason.
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उत्तर
Aniline does not undergo Friedel-Craft's reaction because the reaction takes place in the presence of AlCl3, but AlCl3 is a Lewis acid, whereas aniline is a strong basic. Thus, aniline interacts with AlCl3 to produce a salt.
The positive charge on the N-atom prevents electrophilic substitution in the benzene ring. As a result, aniline does not undergo the Friedel-Craft reaction.
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संबंधित प्रश्न
What is the action of the following reagents on aniline?
Bromine water
Write the structures of main products when aniline reacts with the following reagents :
(CH3CO)2O/pyridine
Write the chemical equations involved when aniline is treated with the following reagents:
Br2 water
What is the action of acetic anhydride on diethylamine?
How will you convert the following?
Aniline into N−phenylethanamide
When bromination of aniline is carried out by protecting – NH2. The major product is
Give reasons for the following observation:
Aniline is acetylated before nitration reaction.
Give reasons for the following observation:
Aniline does not react with methyl chloride in the presence of anhydrous AlCl3 catalyst.
Assertion (A): Bromination of benzoic acid, gives m-bromobenzoic acid.
Reason (R): Carboxyl group increases the electron density at the meta position.
Identify the major product C formed in the following reaction sequence:
\[\ce{CH3 - CH2 - CH2 - I ->[NaCN] A ->[OH-][Partial hydrolysis] B ->[NaOH][Br2] \underset{(major)}{C}}\]
