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प्रश्न
What is the role of \[\ce{HNO3}\] in the nitrating mixture used for nitration of benzene?
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उत्तर
\[\ce{HNO3}\] acts as a base in the nitrating mixture \[\ce{(HNO3 + H2SO4)}\] and provides the electrophile.
\[\ce{HNO3 + H2SO4 -> \underset{Electrophile}{NO^{+}2 + HSO^{-}4} + H2O}\]
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संबंधित प्रश्न
How is chlorobenzene prepared from aniline?
What is the action of the following reagents on aniline?
Bromine water
Give reasons for the following:
Aniline does not undergo Friedel- Crafts reaction.
Write the structures of main products when aniline reacts with the following reagents :
Br2 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
Write short notes on acetylation.
What is the action of the following reagents on aniline?
Hot and conc. sulphuric acid
Illustrate the following reactions giving suitable example in each case
Acetylation of amines
How will you convert the following?
Aniline into N−phenylethanamide
Assertion: N, N-Diethylbenzene sulphonamide is insoluble in alkali.
Reason: Sulphonyl group attached to nitrogen atom is strong electron-withdrawing group.
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.
How can the activating effect of the −NH2 group in aniline be controlled?
Identify the major product C formed in the following reaction sequence:
\[\ce{CH3 - CH2 - CH2 - I ->[NaCN] A ->[OH-][Partial hydrolysis] B ->[NaOH][Br2] \underset{(major)}{C}}\]
