title: Palladium-Catalyzed Double-Decarboxylative Addition to Pyrones: Synthesis of Conjugated Dienoic Esters.
abstract: An interceptive decarboxylative allylation protocol has been developed utilizing pyrone as a C4 synthon. This palladium-catalyzed transformation difunctionalizes the pyrone moiety by in situ generation and activation of both the electrophile and nucleophile via a double decarboxylation pathway. Ultimately, allyl carbonates react smoothly with 2-carboxypyrone under mild reaction conditions to generate synthetically useful acyclic dienoic esters, forming carbon dioxide as the sole byproduct.
authors.affiliation: Department of Chemistry, The University of Kansas , 2010 Malott Hall, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States.
authors.forename: Tapan
authors.initials: T
authors.lastname: Maji
authors.affiliation: Department of Chemistry, The University of Kansas , 2010 Malott Hall, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States.
authors.forename: Jon A
authors.initials: JA
authors.lastname: Tunge