Pak-Hing Leung, Soh-Kheang Loh, Jagadese J. Vittal, Andrew J. P. White and David J. Williams
An asymmetric Diels–Alder reaction between 1-phenyl-3,4-dimethylphosphole and ethyl vinyl ketone promoted by a chiral organopalladium complex gives the corresponding keto-substituted phosphine ligands in which the keto group can be stereospecifically located in the endo- or exo-positions of the phosphanorbornene skeleton.