Silica Gel-Supported Cation Radical Catalyzed Diels-Alder Reaction

摘要

The discovery of the cation-radical catalyzed Diels-Alder reaction opened a field of cation radical chemistry.'The inefficiency of reactions involving neutral or electron-rich dienophiles imposes a major constraint on the Diels-Alder reaction.This reactivity constraint might be relieved by using cation radical which converts these dienophiles to their corresponding electron-deficient species.Bauld has reported that tris(p-bromophenyl) aminium hexachloroantimonate 1 was efficient for certain Diels-Alder reactions.