ASYMMETRIC CYCLOADDITION OF 2-(SULFONYLMETHYL)-2-PROPENYL CARBONATE CATALYZED BY CHIRAL FERROCENYLPHOSPHINE-PALLADIUM COMPLEXES
Cycloddition reaction of ethyl 2-(benzenesulfonylmethyl)-2-propenyl carbonate with methyl acrylate and methyl vinyl ketone in the presence of a chiral ferrocenylphosphine-palladium catalyst gave optically active methylenecyclopentane derivatives of up to