Advertisements
Advertisements
Question
Write the reaction of aliphatic primary amine with nitrous acid.
Advertisements
Solution
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.
\[\ce{\underset{alcohol}{\underset{primary}{\underset{Aliphatic}{R - NH2}}} + \underset{acid}{\underset{Nitrous}{HNO2}} ->[NaNO2 + HCl] \underset{salt}{\underset{diazonium}{\underset{Aliphatic}{[R - \overset{+}{N2}\overset{-}{C}l]}}} ->[H2O] \underset{alcohol}{ROH} + HCl + N2 ^}\]
APPEARS IN
RELATED QUESTIONS
Give the structures of A, B and C in the following reactions :
Answer in one sentence.
Predict the product of the following reaction.
\[\ce{Nitrobenzene ->[Sn/conc.HCl]?}\]
Answer the following
Write a reaction to convert acetic acid into methylamine.
Write reactions to prepare ethanamine from Acetonitrile.
Write reactions to bring about the following conversions.
Acetamide to methylamine
Which nitrogen containing compound amongst the following would undergo Mendius reduction to furnish primary amine \[\ce{(R - NH2)}\]?
The reduction of alkyl cyanide with sodium and ethanol to give primary amines is, ____________.
Quaternary ammonium salt is formed:
Reduction of aromatic nitro compounds using \[\ce{Fe}\] and \[\ce{HCl}\] gives ______.
Which of the following methods of preparation of amines will give same number of carbon atoms in the chain of amines as in the reactant?
What is the best reagent to convert nitrile to primary amine?
Identify A and B in the following reaction.
Write following conversions:
acetanilide `->` p-nitroaniline
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 reaction DOES NOT involve Hoffmann bromamide degradation?
- Phenyl methenamine
- N, N - Dimethylaniline
- N - Methyl aniline
- Benzenamine
Choose the correct order of the basic nature of the above amines.
Which of the following would not be a good choice for reducing nitrobenzene to aniline?
Write a short note on the following:
Ammonolysis
Write a short note on the following:
Ammonolysis.
