Design of chiral ligands for asymmetric catalysis: from C2-symmetric P,P- and N,N-ligands to sterically and electronically nonsymmetrical P,N-ligands.
basic_science · Level V
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Abstract
For a long time, C(2)-symmetric ligands have dominated in asymmetric catalysis. More recently, nonsymmetrical modular P,N-ligands have been introduced. These ligands have been applied successfully in various metal-catalyzed reactions and, in many cases, have outperformed P,P- or N,N-ligands.