Chiral Phosphaalkene−Oxazoline Ligands for the Palladium-Catalyzed Asymmetric Allylic Alkylation
作者:Julien Dugal-Tessier、Gregory R. Dake、Derek P. Gates
DOI:10.1021/ol1020652
日期:2010.10.15
Enantioselective catalysis in moderate to excellent yields and ee’s has been accomplished using a phosphaalkene-based ligand system. Specifically, the palladium-catalyzedallylicalkylation of 1,3-diphenyl-2-propenyl acetate using a chiral P(sp2),N(sp2) ligand proceeds with a variety of malonate nucleophiles in 73−95% yield (79−92% ee).