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How many products are formed from the aldol condensation reaction between ethanal and propanal?

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in Chemistry – Class 12 by (188k points)
How many products are formed from the aldol condensation reaction between ethanal and propanal?

(a) 1

(b) 2

(c) 3

(d) 4

The question was asked in an online quiz.

This key question is from Aldehydes and Ketones Chemical Reactions in portion Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12

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Right answer is (d) 4

To elaborate: Ethanal and propanal both contain α-hydrogen atoms and undergo aldol condensation to form a mixture of four products. The self-aldol products of ethanal and propanal are but-2-enal and 2-methylpent-2-enal respectively. The two products formed from the cross-aldol condensation between one molecule of ethanal and one molecule of propanal are 2-methylbut-2-enal and pent-2-enal.

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