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Karnataka Board PUCPUC Science 2nd PUC Class 12

Describe the following: Cross aldol condensation

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Question

Describe the following:

Cross aldol condensation

Chemical Equations/Structures
Short Answer
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Solution

When aldol condensation is carried out between two different aldehydes and/or ketones, it is called cross aldol condensation. If both of them contain a-hydrogen atoms, it gives a mixture of four products. This is illustrated below by the aldol reaction of a mixture of ethanal and propanal.

Ketones can also be used as one component in the cross-aldol reactions.

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Chapter 8: Aldehydes, Ketones and Carboxylic Acids - Exercises [Page 256]

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NCERT Chemistry Part 1 and 2 [English] Class 12
Chapter 8 Aldehydes, Ketones and Carboxylic Acids
Exercises | Q 8.16 (iii) | Page 256

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