Chiral “P–N–P” ligands, (C20H12O2)PN(R)PY2 [R=CHMe2, Y=C6H5, OC6H5, OC6H4-4-Me, OC6H4-4-OMe or OC6H4-4-tBu] and their allyl palladium complexes

Chiral “P–N–P” ligands, (C20H12O2)PN(R)PY2 [R=CHMe2, Y=C6H5, OC6H5, OC6H4-4-Me, OC6H4-4-OMe or OC6H4-4-tBu] and their allyl palladium complexes