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CBSE Class 12 Chemistry 2019 Delhi Set 3 Solved Paper

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Question : 8 of 9
Marks: +1, -0
Write equations of the following reactions:
(i) Acetylation of aniline
(ii) Coupling reaction
(iii) Carbyl amine reaction
Solution:  
(i) C6H5−N∣H−H+CH3−C∥O−O−C∥O\mathrm{C}_6\mathrm{H}_5-\underset{\mathrm{H}}{\underset{\vert}{\mathrm{N}}}-\mathrm{H}+\mathrm{CH}_3-\underset{\mathrm{O}}{\underset{\parallel}{\mathrm{C}}}-\mathrm{O}-\underset{\mathrm{O}}{\underset{\parallel}{\mathrm{C}}} −CH3⟶C6H5−N∣H−C∥O−CH3-\mathrm{CH}_3\longrightarrow\mathrm{C}_6\mathrm{H}_5-\underset{\mathrm{H}}{\underset{\vert}{\mathrm{N}}}-\underset{\mathrm{O}}{\underset{\parallel}{\mathrm{C}}}-\mathrm{CH}_3 +CH3COOH+\mathrm{CH}_3\mathrm{COOH}(ii)
(iii) R−NH2+CHCl3+3KOH→  Heat  \mathrm{R}-\mathrm{NH}_2+\mathrm{CHCl}_3+3\mathrm{KOH}\xrightarrow{\;\text{Heat}\;} R−NC+3KCl+3H2O\mathrm{R}-\mathrm{NC}+3\mathrm{KCl}+3\mathrm{H}_2\mathrm{O}
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