Aldehyde reacts with Ammonia to form all of the following except:
Correct answer: D. Hydrazones
- A. Amine
- B. Imine
- C. Nitrile
- D. Hydrazones
Explanation
OPTION A: Aldehydes react with ammonia to form a primary amine through Hartmann's nitration or Hofmann rearrangement.OPTION B: The reaction of aldehydes and ketones with ammonia or 1°-amines forms imine derivatives, also known as Schiff bases (compounds having a C=N function). Water is eliminated in the reaction, which is acid-catalyzed and reversible in the same sense as acetal formation. OPTION C: Aldehydes react with ammonia to form nitriles. Nitriles are a functional group in organic chemistry that contains a carbon atom triple-bonded to a nitrogen atom.OPTION D: Aldehydes can react with hydrazine (NH2-NH2) to form Hydrazones, which are compounds containing a hydrazone group (-C=N-NH-).
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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