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Aldehydes, Ketones And Carboxylic Acids

Question
CBSEENCH12008672
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Explain the following:
Benzaldehyde does not undergo aldol condensation whereas acetaldehyde does.

Solution
Aldol condensation involves the addition of an aldehyde (or ketonic) group of one molecule of the carbonyl compound (aldehyde or ketone) with the α-hydrogen atoms of the other. Acetaldehyde has α-hydrogen atoms and undergoes aldol condensation. Benzaldehyde, which has no α-hydrogen atom, does not.

Some More Questions From Aldehydes, Ketones and Carboxylic Acids Chapter

Write the structures of the following compounds.
2-Hydroxycyclopentane carbaldehyde

Write the structures of the following compounds.
4-oxopentanal    

Write the structures of the following compounds.
Di-sec-butyl ketone

Write the structures of the following compounds.
4-fluoro acetophenone.

Write the structures of the following reactions:

Write the structures of products of the following reactions:


    

Arrange the following compounds in increasing order of their boiling points:
CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3.

Arrange the following compounds in increasing order of their reactivity in nucleophilic addition reactions:    
Ethanal, Propanal, Propanone, Butanone.

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