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US 2009/0156767 A1Published application
Substituted pyridine ligands and related water-soluble catalysts
AssigneeUniversity of Massachusetts
InventorTodd S. Emrick
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Abstract
Versatile Group VIII metathesis catalysts, as can be used in a range of polymerization reactions and other chemical methodologies.
Claims24
A Group VIII transition metal compound of a formula
- wherein M is a metal selected from a Group VIII transition metal;
- X1 and X2 are independently selected from anionic ligand components;
- L1-L3 are independently selected from neutral electron donor ligand components, providing one of said L1-L3 components is an N-heterocyclic carbene component and the other said L1-L3 components are independently selected from substituted pyridinyl ligand components, said substituent comprising at least one of an alkoxy moiety and an alkoxycarbonyl moiety;
- and R1-R2 are independently selected from hydrogen, alkyl, substituted alkyl, cyclic alkyl, substituted cyclic alkyl, alkenyl, substituted alkenyl, cyclic alkenyl, substituted cyclic alkenyl, phenyl and substituted phenyl moieties.
1 more element
A metathesis catalyst compound of a formula
- wherein X1 and X2 are independently selected from anionic ligand components;
- L1-L3 are independently selected from neutral electron donor ligand components, providing one of said L1-L3 components is an N-heterocyclic carbene component and the other said L1-L3 components are independently selected from substituted pyridinyl ligand components, said substituent comprising at least one of an alkoxy moiety and an alkoxycarbonyl moiety;
- and R1-R2 are independently selected from hydrogen, alkyl, substituted alkyl, cyclic alkyl, substituted cyclic alkyl, alkenyl, substituted alkenyl, cyclic alkenyl, substituted cyclic alkenyl, phenyl and substituted phenyl moieties.
Dependencies are inferred from the claim text.