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Chapter 22: Q68P-D (page 1204)

Question:Show how you would use an aldol, Claisen, or another type of condensation to make each compound

d.

Short Answer

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Answer

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01

Cross Claisen condensation

The nucleophilic acyl substitution reaction of ether forming the enolate ion with ether group other than reacting ether group leads to form unsaturated ketone.

It is also called mixed Claisen condensation because reacting ether reacts with different ether to form the product.

02

Formation of the product

As the hydrogen is protonated from the reacting species, which is ether formation of enolate ion occurs, which combines with ether other than reacting ether group, followed by the removal of formation of unsaturated ketone appear as shown:

Claisen Condensation

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