Palladium(II) Complexes of α-Stabilized Phosphorus Ylides

Using the α-stabilized phosphorus ylides PhC(O)CH PPh 2 CH 2 CH 2 PPh 2 CHC(O)Ph and Ph 3 P CHC(NMe 2 ) CH 2, novel palladium(II) complexes were synthesized: [PhC(O)CH PPh 2 CH 2 CH 2 PPh 2 CHC(O)Ph]PdCl 2, where two asymmetric carbon centers were formed, and the η 3 -allyl complex [Ph 3 P CHC(NMe 2 ) CH 2 ]PdCl 2 are easily accessible by exchange of cycloocta-1,5-diene or benzonitrile in the corresponding palladium complexes. The molecular structures of both complexes were confirmed by X-ray crystal structure analysis.