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.
Propiedades
- Tipo
- Orgánica
- Reversible
- Sí
- Energía
- Exotérmico
- ΔH
- -22,0 kJ/mol
- Catalizador
- NaOH (base catalyst)
Reacciones relacionadas
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)).