Question

Whats happens when acetaldehyde heated with aqueous sodium hydroxide solution?

Answer 1

Aldol reaction happens in aldehydes and ketones if the compounds contain no less than one α-hydrogen. Therefore, the reaction occurs in the presence of an alkali (dilute). The dilute alkali acts as a catalyst in the reaction and helps in the formation of β-hydroxy aldehydes or aldol and β-hydroxy ketones or ketol.

Answer 2

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Aldol reaction happens in aldehydes and ketones if the compounds contain no less than one α-hydrogen. Therefore, the reaction occurs in the presence of an alkali (dilute). The dilute alkali acts as a catalyst in the reaction and helps in the formation of β-hydroxy aldehydes or aldol and β-hydroxy ketones or ketol.