Question

Which type of reactions of aldehydes and ketones undergo aldol condensation?

Answer 1

The carbanion undergoes nucleophilic addition with the carbonyl group of a second molecule of ethanal, which leads to formation of the condensation product. A reaction with water protonates the alkoxide ion.
If the aldol is heated in basic solution, the molecule can be dehydrated to form an α β‐unsaturated aldehyde.

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