Textbook Question
Predict the products of the following aldol condensations. Show the products both before and after dehydration.
(e)
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25. Condensation Chemistry
Crossed Aldol Condensation
Multiple Choice
Give the structure of the aldehydes or ketones used to create the product prepared by a crossed aldol reaction.
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Verified step by step guidance1
Identify the product of the crossed aldol reaction. The product shown is a β-hydroxy ketone, which is typical of aldol reactions.
Recognize that a crossed aldol reaction involves two different carbonyl compounds, typically an aldehyde and a ketone, reacting together.
Examine the structure of the product. The β-hydroxy group indicates the position where the new carbon-carbon bond was formed during the aldol reaction.
Determine the structure of the starting carbonyl compounds. The ketone part of the product suggests that one of the starting materials was a ketone, while the aldehyde part suggests the other was an aldehyde.
Analyze the product to deduce the specific aldehyde and ketone used. The presence of a cyclohexanone moiety in the product suggests cyclohexanone was used, and the presence of a propyl group suggests propanal was the aldehyde used.
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