C2-symmetric S/C/S ligands based on N-heterocyclic carbenes: a new ligand architecture for asymmetric catalysis.
Neutral, C2-symmetric S/C/S ligands based on N-heterocyclic carbenes and thioether functionalities were incorporated into transition metal complexes characterised by two direct metal-stereogenic sulfur bonds. This new ligand design was applied to 1,3-dipolar cycloadditions as the first example of the use silver of carbenes in asymmetric catalysis.
Iglesias-Sigüenza
Javier
J
Departamento de Química Orgánica, Univ. de Sevilla, Apdo. de Correos 1203, 41071 Seville, Spain.
Ros
Abel
A
Díez
Elena
E
Magriz
Antonio
A
Vázquez
Arcadio
A
Alvarez
Eleuterio
E
Fernández
Rosario
R
Lassaletta
José M
JM