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Write the reaction of aliphatic primary amine with nitrous acid. - Chemistry

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प्रश्न

Write the reaction of aliphatic primary amine with nitrous acid.

रासायनिक समीकरणे/रचना
एका वाक्यात उत्तर
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उत्तर

Aliphatic primary amine react with nitrous acid (prepared in situ from NaNO2 and a mineral acid such as HCl) to form unstable aliphatic diazonium salts, which further produce alcohol and HCl with the evolution of N2 gas.

\[\ce{\underset{alcohol}{\underset{primary}{\underset{Aliphatic}{R - NH2}}} + \underset{acid}{\underset{Nitrous}{HNO2}} ->[NaNO2 + HCl] \underset{salt}{\underset{diazonium}{\underset{Aliphatic}{[R - \overset{+}{N2}\overset{-}{C}l]}}} ->[H2O] \underset{alcohol}{ROH} + HCl + N2 ^}\]

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पाठ 9: Amines - Exercises [पृष्ठ २८०]

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एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
पाठ 9 Amines
Exercises | Q 9.13 (ii) | पृष्ठ २८०

संबंधित प्रश्‍न

Identify the compounds 'A' and 'B' in the following equation:


Write the chemical equation involved in the following reaction:

Hoffmann-bromamide degradation reaction


Why cannot aromatic primary amines be prepared by Gabriel phthalimide synthesis?


Give the structures of A, B and C in the following reactions :


Answer the following

Identify A and B in the following reactions.

\[\ce{C6H5CH2Br->[alco.][KCN]A ->[Na/ethanol]B.}\]


Explain the following reaction with a suitable example.

Hofmann elimination reaction


Which of the following reagents is used in Mendius reduction reaction of alkyl cyanide?


Nitro compounds are reduced by iron scrap and hydrochloric acid to yield one of the following compounds:


Which of the following reagents would not be a good choice for reducing an aryl nitro compound to an amine?


The source of nitrogen in Gabriel synthesis of amines is ______.


Amongst the given set of reactants, the most appropriate for preparing 2° amine is ______.


The best reagent for converting 2–phenylpropanamide into 2-phenylpropanamine is ______.


What is the best reagent to convert nitrile to primary amine?


Match the reactions given in Column I with the statements given in Column II.

  Column I   Column II
(i) Ammonolysis (a) Amine with lesser number of carbon atoms
(ii) Gabriel phthalimide synthesis (b) Detection test for primary amines.
(iii) Hoffmann Bromamide reaction (c) Reaction of phthalimide with \[\ce{KOH}\] and \[\ce{R-X}\]
(iv) Carbylamine reaction (d) Reaction of alkylhalides with \[\ce{NH3}\]

Which of the following CANNOT be prepared by ammonolysis of alkyl halide?


  1. Phenyl methenamine
  2. N, N - Dimethylaniline
  3. N - Methyl aniline
  4. Benzenamine

Choose the correct order of the basic nature of the above amines.


The amine 'A' when treated with nitrous acid gives yellow oily substance. The amine A is ______.


Amides can be converted into amines by the reaction named ______.


Write a short note on the following:

Ammonolysis


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