Palladium Complexes of Chiral Planar 1-Phosphino-2-sulfenylferrocenes as Efficient Catalysts in Enantioselective Diels−Alder Reactions
作者:Olga García Mancheño、Ramón Gómez Arrayás、Juan Carlos Carretero
DOI:10.1021/om0493762
日期:2005.2.1
The readily available dichloride palladium complexes of chiral planar (R)-1-phosphino-2-sulfenylferrocenes (Fesulphos ligands) act as efficient Lewis acids in the catalytic asymmetric Diels−Alder reaction of cyclopentadiene with acryloyl-1,3-oxazolidin-2-one. Very high enantioselectivities, up to 95% ee, have been reached from Fesulphos ligands having a very bulky substitution at both sulfur and phosphorus