Asymmetric Ligands for Transition‐Metal‐Catalyzed Reactions: 2‐Diphenylphosphinobenzoyl Derivatives of C₂‐Symmetric Diols and Diamines

For Pd-catalyzed allylic alkylations a series of novel C2-symmetric bis-(diphenylphosphino) ligands have proved to be extremely efficient. For example, the model reaction 1 → 2 with diamide 3 as ligand proceeds in 94% yield and 88% ee. Ts  para-toluolsulfonyl, dba  dibenzylidenacetoacetonate.