Chemical Properties of Aldehydes And Ketones

IMPORTANT

Chemical Properties of Aldehydes And Ketones: Overview

This Topic covers sub-topics such as Cannizzaro's Reaction, Aldol Condensation, Perkin's Reaction, Cross-Aldol Condensation, Haloform Reaction, Benzoin Condensation, Mechanism of Aldol Condensation, Claisen-Schmidt Reaction and, Knoevenagel Reaction

Important Questions on Chemical Properties of Aldehydes And Ketones

EASY
IMPORTANT

The reaction of cyclopentanone with diazomethane gives

MEDIUM
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Complete the following reaction:

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HARD
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Two molecules of benzaldehyde undergo condensation in the presence of a cyanide catalyst (e.g., NaCN or KCN) to form 2-hydroxy-1,2-diphenylethanone.

HARD
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Give the IUPAC name of the compound formed when two molecules of benzaldehyde undergo condensation in the presence of a cyanide catalyst (e.g., NaCN or KCN).

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2-pentanone on oxidation with alkaline KMnO4 gives methanoic acid and butanoic acid.

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Which of the following acid(s) is/are not formed on the reaction of 2-pentanone with alkaline KMnO4?

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The reaction of 2-pentanone with alkaline KMnO4 gives

MEDIUM
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Write equation for the reaction of 2-pentanone with alkaline KMnO4.

HARD
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Tatrazine dye is formed on condensation of benzaldehyde with N, N – dimethyl aniline in the presence of strong acid.

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Benzaldehyde on reaction with N, N – dimethyl aniline in the presence of strong acid forms

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Name the product formed in the given reaction:
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Explain the condensation of benzaldehyde with tertiary aromatic amines.
 

EASY
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_____ condensation reaction is a nucleophilic addition between an aldehyde or ketone, and an active hydrogen compound in the presence of a basic catalyst, resulting in a CC bond formation usually followed by spontaneous dehydration resulting in an unsaturated product.

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Acetone reacts with malonic acid in presence of pyridine followed by dehydration to give

MEDIUM
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Write the general equation for Knoevenagel reaction.

HARD
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Write the mechanism for aldol condensation.

EASY
IMPORTANT

How does carbonyl compounds react with diazomethane?