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प्रश्न
Write short notes on acetylation.
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उत्तर
The process of introducing an acetyl group \[\begin{array}{cc}
\phantom{.....}\ce{O}\\
\phantom{.....}||\\
\ce{(CH3 - C - )}
\end{array}\] into a molecule is called acetylation. The reaction occurs by nucleophilic substitution. There occurs a replacement of the hydrogen atom of −NH2 or > NH by the acetyl group.
Common acetylating agents used are acetyl chloride and acetic anhydride.
\[\begin{array}{cc}
\ce{O}\phantom{................}\ce{O}\phantom{..}\\
||\phantom{.................}||\phantom{..}\\
\ce{CH3CH2NH2 + CH3 - C - Cl -> \underset{N-Ethylacetamide}{CH3 - C - NH - CH2CH3} + HCl}
\end{array}\]
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संबंधित प्रश्न
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Bromine water
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Aniline does not undergo Friedel- Crafts reaction.
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Br2 water
Write the chemical equations involved when aniline is treated with the following reagents:
Br2 water
Illustrate the following reactions giving suitable example in each case
Acetylation of amines
How will you convert the following?
Aniline into N−phenylethanamide
In the nitration of benzene using a mixture of conc. \[\ce{H2SO4}\] and conc. \[\ce{HNO3}\], the species which initiates the reaction is ______.
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Give reasons for the following observation:
Aniline is acetylated before nitration reaction.
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Assertion (A): Bromination of benzoic acid, gives m-bromobenzoic acid.
Reason (R): Carboxyl group increases the electron density at the meta position.
Aniline does not give Friedel-Crafts reaction. Give a reason.
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:
