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प्रश्न
Hoffmann Bromamide Degradation reaction is shown by ______.
विकल्प
\[\ce{ArNH2}\]
\[\ce{ArCONH2}\]
\[\ce{ArNO2}\]
\[\ce{ArCH2NH2}\]
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उत्तर
Hoffmann Bromamide Degradation reaction is shown by \[\ce{ArCONH2}\].
Explanation:
Hoffmann invented a method for producing primary amines by treating an amide with bromine in an aqueous or ethanolic sodium hydroxide solution. An alkyl or aryl group migrates from the amide's carbonyl carbon to the nitrogen atom during this degradation reaction.
\[\ce{C4H5CONH2 ->[Br2 + NaOH] C4H5NH2}\]
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संबंधित प्रश्न
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\[\ce{C6H5NO2 ->[Fe/HCl] A ->[NaNO2 + HCl][273 K] B ->[H2O/H+][\Delta] C}\]
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\[\ce{Aniline ->[NaNO2][HCl] A ->[KI] B}\]
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Assertion (A): Alkyl halides are insoluble in water.
Reason (R): Alkyl halides have halogen attached to sp3 hybrid carbon.
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| 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 \[\ce{NH3}\] |
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Aniline cannot be prepared by the ammonolysis of chlorobenzene under normal conditions.
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Write a short note on the following:
Ammonolysis
Write a short note on the following:
Ammonolysis
Write short note on the following.
Ammonolysis.
Write a short note on the following:
Ammonolysis
