30/06/2024
Diels-Alder reaction mechanism proceeds through the suprafacial (same-face involvement of the 𝝅 system or isolated orbital in the process) interaction between a 4𝝅 electron system with a 2𝝅 electron system. Diels-Alder reaction involves cycloaddition reactions resulting in the formation of a new ring from two reactants.
In Diels-Alder reaction, the 4𝝅 electron system refers to the diene structure whereas the 2𝝅 electron system refers to the dienophile structure. This interaction now leads to a transition state without any additional energy barrier from the imposition of orbital symmetry.
