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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
Write the structures of main products when aniline reacts with the following reagents :
(CH3CO)2O/pyridine
What is the action of the following reagents on aniline?
Acetic anhydride
Illustrate the following reactions giving suitable example in each case
Acetylation of amines
In the nitration of benzene using a mixture of conc. \[\ce{H2SO4}\] and conc. \[\ce{HNO3}\], the species which initiates the reaction is ______.
What is the role of \[\ce{HNO3}\] in the nitrating mixture used for nitration of benzene?
Give reasons for the following observation:
Aniline does not react with methyl chloride in the presence of anhydrous AlCl3 catalyst.
In the following reaction, the reason for why meta-nitro product also formed is:
How can the activating effect of the −NH2 group in aniline be controlled?
Given below are two statements:
Statement I: Aniline does not undergo a Friedel-Crafts alkylation reaction.
Statement II: Aniline cannot be prepared through Gabriel synthesis.
In the light of the above statements, choose the correct answer from the options given below:
Identify the major product C formed in the following reaction sequence:
\[\ce{CH3 - CH2 - CH2 - I ->[NaCN] A ->[OH-][Partial hydrolysis] B ->[NaOH][Br2] \underset{(major)}{C}}\]
