Reacción de Diels-Alder (butadieno + etileno)

C4H6 + C2H4 → C6H10

Descripción general

A conjugated diene (1,3-butadiene) reacts with a dienophile (ethylene) in a [4+2] cycloaddition to form cyclohexene. This pericyclic reaction proceeds through a concerted mechanism with no intermediates, forming two new carbon-carbon bonds and a six-membered ring simultaneously.

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Etileno C₂H₄ 1 (g)
Producto Ciclohexano C₆H₁₂ 1 (l)

Ejemplo cotidiano

Otto Diels and Kurt Alder won the 1950 Nobel Prize for discovering this reaction, which is taught in every organic chemistry course.

Importancia industrial

Las reacciones de Diels-Alder se emplean para sintetizar esteroides, terpenos, alcaloides y numerosos intermedios farmacéuticos con precisión estereoquímica.

Preguntas frecuentes

What is the equation for Reacción de Diels-Alder (butadieno + etileno)?
The balanced equation is: C₄H₆ + C₂H₄ → C₆H₁₀.
What type of reaction is Reacción de Diels-Alder (butadieno + etileno)?
Reacción de Diels-Alder (butadieno + etileno) is a orgánica reaction. It is reversible under certain conditions.
Is Reacción de Diels-Alder (butadieno + etileno) exothermic or endothermic?
Reacción de Diels-Alder (butadieno + etileno) is exothermic (releases energy). The enthalpy change (ΔH) is -40.0 kJ/mol.