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Chapter 24: Q.8. (page 962)

Question: Draw the products formed in the crossed aldol reaction of phenylacetaldehyde (C6H5CH2CHO)with each compound: (a) CH2(COOEt)2; (b) CH2(COCH3)2; (c) CH3COCH2CN.

Short Answer

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Answer

a.

b.

c.

Step by step solution

01

Crossed aldol reaction

Aldol reaction carried out using two different (non-identical) carbonyl compounds is referred to as the crossed aldol reaction.

02

Crossed aldol reaction mechanism

A crossed-aldol reaction is shown below.

Crossed aldol reaction

03

Products formed in a crossed aldol reaction

a. The reaction of C6H5CH2CHOwith CH2COOEt2 is represented below:

Reaction of phenyl acetaldehyde with CH2COOEt2

b. The reaction of C6H5CH2CHO with CH2COCH32is represented below:

Reaction of phenyl acetaldehyde with CH2COCH32

c. The reaction of C6H5CH2CHO with CH3COCH2CN is represented below:

Reaction of phenyl acetaldehyde withCH3COCH2CN

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