First planar chiral bidentate ligand based on a (η5-cyclopentadienyl)(η4-cyclobutadiene) cobalt backbone: high efficiency in enantioselective palladium-catalyzed allylic substitutions†
Abstract
The synthesis of the planar chiral (R)-[η5-(1-diphenylphosphino-2-tert-butylsulfenyl)cyclopentadienyl](η4-tetraphenylcyclobutadiene) cobalt and its high efficiency as P,S-bidentate