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Question

Which of the following are examples of aldol condensation?

A
2CH3CHODil.NaOH−−−−−CH3CHOHCH2CHO
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B
2CH3COCH3Dil.NaOH−−−−−(CH3)2C(HO)CH2COCH3
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C
2HCHODil.NaOH−−−−−CH3OH
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D
C6H5CHO+HCHODil.NaOH−−−−−C6H5CH2OH
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Solution

The correct option is B 2CH3COCH3Dil.NaOH−−−−−(CH3)2C(HO)CH2COCH3
(a) and (b) have αH atoms, so they undergo aldol condensation; (c) is Cannizzaro reaction; (d) is Claisen-Schmidt reaction.

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