Palladium/Copper-Catalyzed Di-α-arylation of Acetic Acid Esters
作者:Bingrui Song、Thomas Himmler、Lukas J. Gooßen
DOI:10.1002/adsc.201100172
日期:2011.7
bimetallic palladium/copper catalystsystem was found to effectively promote the diarylation of alkyl acetates with arylhalides under unprecedentedly mild conditions. The phenanthroline‐copper‐phosphine catalyst stabilizes the enolate intermediate to the extent that the deprotonation of esters can be achieved even with the mild base potassium phosphate. The palladium tri‐tert‐butylphosphine co‐catalyst