Palladium-Catalyzed Stille Cross-Coupling Reaction of Aryl Chlorides using a Pre-Milled Palladium Acetate and XPhos Catalyst System
作者:John R. Naber、Stephen L. Buchwald
DOI:10.1002/adsc.200800032
日期:2008.5.5
highly active catalystsystem based upon a biaryl monophosphine ligand, XPhos, for the palladium-catalyzedStillereaction has been developed. This method allows for the coupling of arylchlorides with a range of tributylarylstannanes to produce the corresponding biaryl compounds in good to excellent yields (61–98%) in short reaction times (4 h). Palladium(II) acetate [Pd(OAc)2] and XPhos in a 1:1.1 ratio