Retro Diels-Alder Reaction Definition:

The reverse of a Diels-Alder reaction, achieved at high temperature. A cyclohexene derivative is converted into a diene and a dienophile.

Retro Diels-Alder Reaction Explained:

The microscopic reverse of the Diels–Alder reaction—the formation of a diene and dienophile from a cyclohexene. It can be accomplished spontaneously with heat, acid, or base mediation.