22. Condensation Chemistry
Crossed Aldol Condensation
22. Condensation Chemistry
Crossed Aldol Condensation
When we run condensation reactions on two different ketones or aldehydes, mixed products are difficult to avoid.Â
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concept
Crossed Aldol
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Solution – Run condensation reactions with a nonenolizable aldehyde or ketone.
- Examples:

2
Problem
ProblemGive the structure of the aldehydes or ketones used to create the product prepared by a crossed aldol condensation reaction.
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Problem
ProblemGive the structure of the aldehydes or ketones used to create the product prepared by a crossed aldol reaction.
A
B
C
D
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Problem
ProblemWhat product can be isolated from the following aldol condensation reaction?
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B
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PRACTICE PROBLEMS AND ACTIVITIES (6)
- Predict the products of the following reactions. (d)
- Predict the major products of the following base-catalyzed aldol condensations with dehydration. (b) 2,2-dime...
- Predict the major products of the following base-catalyzed aldol condensations with dehydration. (a) benzophe...
- Propose mechanisms for the following base-catalyzed condensations, with dehydration. (b) benzaldehyde with p...
- Propose mechanisms for the following base-catalyzed condensations, with dehydration. (a) 2,2-dimethylpropana...
- Propose mechanisms for the following reactions. (a) < of reaction>