Condensación aldólica de acetaldehído

2CH3CHO → CH3CH(OH)CH2CHO

Descripción general

Two molecules of acetaldehyde combine in a base-catalyzed aldol reaction to form 3-hydroxybutanal (aldol). The alpha-hydrogen of one molecule is abstracted by base to form an enolate, which attacks the carbonyl of the second molecule. Dehydration can follow to give an alpha,beta-unsaturated aldehyde (crotonaldehyde).

Ejemplo cotidiano

The aldol reaction is one of the most powerful carbon-carbon bond forming reactions in synthetic chemistry, used to build complex molecules.

Importancia industrial

Las reacciones aldólicas se utilizan industrialmente para producir 2-etilhexanol (alcohol plastificante), pentaeritritol (explosivos) e intermedios farmacéuticos.

Preguntas frecuentes

What is the equation for Condensación aldólica de acetaldehído?
The balanced equation is: 2CH₃CHO → CH₃CH(OH)CH₂CHO.
What type of reaction is Condensación aldólica de acetaldehído?
Condensación aldólica de acetaldehído is a orgánica reaction. It is reversible under certain conditions.
Is Condensación aldólica de acetaldehído exothermic or endothermic?
Condensación aldólica de acetaldehído is exothermic (releases energy). The enthalpy change (ΔH) is -22.0 kJ/mol.
What conditions are needed for Condensación aldólica de acetaldehído?
This reaction requires a catalyst (NaOH (base catalyst)).