Chiral (salen)Co(III)(N-benzyl-l-serine)-derived phosphites: monodentate P-ligands for enantioselective catalytic applications

Riding the Wave of Monodentate Ligand Revival: From the A/B Concept to Noncovalent Interactions

The rediscovery of chiral monodentate ligands made in the period 1999-2003 had important consequences in enantioselective transition-metal catalysis, such as the introduction of the A/B concept (i.e., use of monodentate ligand mixtures) and, later, a renewed interest in supramolecular ligands capable of ligand-ligand and ligand-substrate interactions. This Personal Account summarizes the contributions made by our research group in this area in the period 2004-2015, which reflect the abovementioned developments. Within this area, we introduced some original concepts, such as 1) the use of chiral tropos ligand mixtures; 2) the development of new strategies to maximize heterocomplex formation from combinations of simple monodentate ligands; 3) the investigation of new ligand-ligand interactions to achieve selective heterocomplex formation; and 4) the development of highly efficient and synthetically accessible supramolecular ligands.

Controlling the self-assembly of homochiral coordination architectures of CuII by substitution in amino acid based ligands: synthesis, crystal structures and physicochemical properties

In this paper we report six chiral ligands based on l-tyrosine, l-serine and l-phenylalanine and their homochiral Cu^II complexes to study the effect of various substitutions in the ligands on the formation of diverse coordination architectures.