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Chemistry
Which one of the following compounds will not undergo aldol condensation ?
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Q. Which one of the following compounds will not undergo aldol condensation ?
UPSEE
UPSEE 2009
A
Acetaldehyde
B
Formaldehyde
C
Propionaldehyde
D
Acetone
Solution:
Aldol condensation is given by only those aldehydes or ketones which contain at least one $\alpha- H$ atom.
Hence, formaldehyde, $HCHO$ due to the absence of $\alpha$ - $H$ atom, does not give aldol condensation.