(Vinyl tosyloxy)benziodolium Salts: Divergent Construction of Conjugated Diene Derivatives via Sequential Coupling Reactions

Using (vinyl tosyloxy)benziodolium salts, we divergently synthesized a series of conjugated diene derivatives with the Mizoroki–Heck reaction. Subsequent coupling reactions of these dienes provide access to polycyclic aromatic conjugated diene derivatives. Derivatization of ester-substituted conjugated dienes enabled the synthesis of ortho -iodoarylpyranones. Further oxidation of ortho -iodoarylpyranones furnishes cyclic arylidonium salts, which serve as versatile reagents for polycyclic aromatic hydrocarbons.