Pd-Catalyzed Synthesis of Acyclic 1,2-Dioxygenated Dienes and Their Regioselective Decarboxylative Diels–Alder Cycloaddition/Aromatization Reactions to Access Multisubstituted Phenols

A Pd-catalyzed protocol that provides efficient access to acyclic 1,2-dioxygenated dienes has been established. The installation of the bifunctional carbonate electrofuge to the diene cores enabled such dienes to undergo a regioselective decarboxylative Diels-Alder cycloaddition/aromatization reaction, affording diverse synthetic challenging multisubstituted phenols with ease.