Question
Describe the following:
Cross aldol condensation.
✓
Answer
Cross aldol condensation: Aldol condensation between two different aldehydes is called cross aldol condensation. If both aldehydes contain a-hydrogens, It gives a mixture of four products.
$\ \ \ \ \ \ \ \ \ \ \ \ \ \text{O}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{O}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{O}\\\ \ \ \ \ \ \ \ \ \ \ \ \ ||\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ||\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ || \\ \text{CH}_3-\text{C}-\text{H}+\text{H}-\text{C}-\text{H}\xrightarrow{\text{Dil. NaOH}}\text{HO}-\text{CH}_2-\text{CH}_2-\text{C}-\text{H}$
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