Aldol condensation of aldehyde involves the formation of which of the following intermediate?
A
Acetate ion
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B
Carbanion
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C
Carbonium ion
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D
Free radical
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Solution
The correct option is B Carbanion Aldol condensation of aldehyde involves the formation of which of the carbanion as the reaction intermediate in the first step by removal of αH from the aldehyde by the base. This enolate ion is resonance stabilised.