... on both components. Thereare other [p4sp2s] reactions, and therefore it is the term Diels Alder whichspecifies this particular type of reaction. The Diels Alder reaction can be intermolecular ... groups, on the carbon atom double bond, activate the double bond in normal and inverse electron-demand Diels Alder reactions,respectively.1.3 PERICYCLIC DIELS ALDER REACTION The Diels Alder reaction ... RADICAL DIELS ALDER REACTIONSConjugated cations, anions and radicals can give the Diels Alder reaction. Insuch a case, the two s bonds are formed in two separate steps (stepwise Diels Alder Reaction: ...