Catalytic carbonylation catalysts and methods
AssigneeNovomer, Inc.
InventorsHan Lee, Scott D. Allen, Jay Farmer, Geoff Coates
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Abstract
In one aspect, the present invention provides catalysts for the carbonylation of heterocycles. The inventive catalysts feature metal-ligand complexes having cationic functional groups tethered to the ligand, wherein the tethered cationic groups are associated with anionic metal carbonyl species. The invention also provides methods of using the inventive catalysts to affect the ring opening carbonylation of epoxides.
Claims23
A catalyst for the carbonylation of heterocycles comprising the combination of:
- i) one or more cationic functional moieties, where each cationic functional moiety independently comprises a linker and 1 to 4 cationic functional groups;
- ii) a tetraphenyl porphyrin ligand to which at least one cationic functional moiety is covalently tethered;
- and
- iii) at least one anionic metal carbonyl species associated with a cation functional group.
A catalyst for the carbonylation of heterocycles comprising a compound selected from the group consisting of:
- wherein M is selected from the group consisting of:
Dependencies are inferred from the claim text.