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 B2CH3COCH3Dil.NaOH−−−−−−→(CH3)2C(HO)CH2COCH3 (a) and (b) have α−H atoms, so they undergo aldol condensation; (c) is Cannizzaro reaction; (d) is Claisen-Schmidt reaction.