The present invention relates to chiral metal catalysts for stereoselective olefin
metathesis reactions, which are recyclable and reusable in such metathesis reactions.
The chiral metal-based metathesis catalysts of the invention comprise multidentate
optically active or racemic chiral ligands that enable their use in asymmetric
synthetic processes, such as for example, in ring-opening and ring-closing metathesis
reactions (ROM and RCM, respectively) of alkenes. The catalysts of the invention
are organometallic complexes of multivalent metals comprising one or more chiral
bidentate ligands that exhibit superior reactivity and stereoselectivity properties.
The present invention also provides methods of making such catalysts and methods
for utilizing them in catalyzing stereoselective olefin metathesis reactions to
provide asymmetric products in relatively high enantiomeric or stereoisomeric excess.