Phosphorus-containing ligands

The Dupont method to prepare polymer-supported bidentate phosphorus-containing ligands makes use of Merrifield s resin (Scheme 10).69... 

The basicity of phosphorus-containing ligands and their ability to dissociate to give sites for attachment of the double bonds of the substrate play an important role in determining the type of product formed. Another mechanism, based on formation of nickel hydrides, is available, however, for oligomerization and polymerization, as we shall see later. 

Bourget-Merle, L. Hitchcock, P. B. Lappert, M. F. Novel metal complexes containing 1-azaallyl and /3-diketiminato ligands. Phosphorus Sulfur Silicon Relat. Elem. 2001, 168-169, 609-612. 

Kopping JT, Patten TE (2008) Identification of acidic phosphorus-containing ligands involved in the surface chemistry of CdSe nanoparticles prepared in tri-n-octylphosphine oxide solvents. J Am Chem Soc 130 5689-5698... 

In total, 29 phosphorus-containing chiral ligands of various structures were screened under the optimized y-selective conditions, but most of them gave little or no chiral induction. The four ligands 38a-d, all derived from (—)-TADDOL, depicted in Fig. 8.4 gave ees in excess of 30% in the reaction between ethyl magnesium bromide and cinnamyl chloride. 

Properties of Phosphorus-Containing Ligands as a Source of Information in Metal Catalysis and Model Complexes.65... 

Phosphorus-containing ligands show manifold influences on oxidation states and isomerisms in complexes and the extent of associations (see Chap. 3). The directing influence of varying properties in phosphines and phosphites was experimentally investigated for allyl-Ni-ligand complexes, e.g. with respect to ... 

---