Palladium-Catalyzed Double-Decarboxylative Addition to Pyrones: Synthesis of Conjugated Dienoic Esters

Autor: Jon A. Tunge, Tapan Maji
Rok vydání: 2015
Předmět:
Zdroj: Organic Letters. 17:4766-4769
ISSN: 1523-7052
1523-7060
DOI: 10.1021/acs.orglett.5b02308
Popis: 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.
Databáze: OpenAIRE