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COMEDK2022ChemistryAldehydes and Ketones

Find the product formed for the given reaction.

Options

  1. AC ₆ H ₅- CH ₂ CH ₂ CH ₂ CHO

Correct answer

3

Step-by-step solution

The reaction between benzaldehyde ( C ₆ H ₅ CHO ) and propanal ( CH ₃ CH ₂ CHO ) in the presence of dilute NaOH and heat is a crossed aldol condensation reaction. Benzaldehyde does not have -hydrogens, while propanal has two -hydrogens. Therefore, the enolate ion is formed from propanal by the abstraction of an -hydrogen by the base OH ⁻ . The enolate ion CH ₃ CH ⁻- CHO attacks the carbonyl carbon of benzaldehyde to form a -hydroxy aldehyde intermediate: C ₆ H ₅ CH ( OH )- CH ( CH ₃) CHO . Upon heating ( ), this in

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