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प्रश्न
Give the structure of A, B and C in the following reaction:
\[\ce{CH3CH2I ->[NaCN] A ->[OH-][Partial hydrolysis] B ->[NaOH + Br2] C}\]
उत्तर
\[\begin{array}{cc}
\phantom{.......................}\ce{O}\\
\phantom{.......................}||\\
\ce{\underset{Iodoethane}{CH3CH2I} ->[NaCN] \underset{(A)}{\underset{Propane nitrile}{CH3CH2CN}} ->[OH-][Partial hydrolysis] \underset{(B)}{\underset{Propanamide}{CH3CH2-C-NH2}} ->[NaOH + Br2] \underset{(C)}{\underset{Ethanamine}{CH3CH2-NH2}}}
\end{array}\]
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संबंधित प्रश्न
An aromatic compound 'A' of molecular formula C7H7ON undergoes a series of reactions as shown below. Write the structures of A, B, C, D and E in the following reactions :
Write a short note on the following:
Hoffmann’s bromamide reaction
Mention 'two' uses of propan-2-one.
Account for the following:
Gabriel phthalimide synthesis is not preferred for preparing aromatic primary amines.
Write structures of compounds A and B in each of the following reactions:
Explain Hoffmann’s exhaustive alkylation with suitable reactions.
Which of the following amines forms a clear solution when treated with benzene sulphonyl chloride and excess of potassium hydroxide?
Identify 'A' and 'B' in the following conversions.
\[\ce{CH3 - I ->[Alc. KCN][\Delta] A ->[Na/C2H5OH] B}\]
Which of the following reagents is used in Hofmann's elimination reaction of amines?
Amongst the following, the strongest base in aqueous medium is ______.
Among the following amines, the strongest Brönsted base is:
Under which of the following reaction conditions, aniline gives p-nitro derivative as the major product?
(i) Acetyl chloride/pyridine followed by reaction with conc.\[\ce{H2SO4 }\] + conc. \[\ce{HNO3}\].
(ii) Acetic anyhdride/pyridine followed by conc.\[\ce{H2SO4}\] + conc.\[\ce{HNO3}\].
(iii) Dil. HCl followed by reaction with conc.\[\ce{H2SO4}\] + conc.\[\ce{HNO3}\].
(iv) Reaction with conc.\[\ce{HNO3}\] + conc.\[\ce{H2 SO4}\].
What is the product when \[\ce{C6H5CH2NH2}\] reacts with \[\ce{HNO2}\]?
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 \[\ce{NH3}\] |
Acetamide and ethyl amide can be distinguished by reacting with.
Which of the following reaction DOES NOT involve Hoffmann bromamide degradation?
Amides can be converted into amines by the reaction named ______.
Write short note on the following.
Ammonolysis.
