Metal complexes for hydrogenation of unsaturated compounds
AssigneeUniversity of New Orleans Research and Technology Foundation, Inc.
InventorsSteven P. Nolan, Hon Man Lee, Anna C. Hillier
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Abstract
The cationic iridium carbene complexes [Ir(cod)(N)(L)]X have been synthesized by reaction of [Ir(cod)(py)2]PF6 with L or NL ligands. Complexes of this type are active hydrogenation catalysts capable of hydrogenating simple olefins at room temperature and atmospheric pressure of hydrogen or by transfer hydrogenation.
Claims42
An iridium carbene complex of the formula [Ir(diene)(N)(L)]X. where diene is a diene or two monoene, N is a 2 electron nitrogen donor, L is a bulky nucleophilic carbene, and X is an anionic counterion.
An iridium carbene complex of the formula [Ir(cod)(py)(SIMes)]PF6.
An olefin hydrogenation catalyst bearing a nucleophilic carbene ligand.
A complex of the formula Ir(cod)(py)(L)]PF6, where L is from the group consisting of:
- IMes, 1,3-bis(2,4,6-trimethylphenyl)-imidazol-2-ylidene;
- IPr, 1,3-bis(2,6-di-iso-propylphenyl)-imidazol-2-ylidene;
- ICy, 1,3-bis(cyclohexyl)-imidazol-2-ylidene;
- and
- chiral carbene.
An iridium carbene complex of the formula [Ir(diene)(N—L)]X. where:
- diene is a diene or two monoene;
- N is a 2 electron nitrogen donor from the group consisting of oxazolines, phosphines, and carbenes;
- L is a bulky nucleophilic carbene;
- X is an anionic counterion;
- and
- N and L are tethered so N and L make a bidentate ligand.
An iridium carbene complex of the formula [Ir(diene)(R—C)]X. where:
- diene is a diene or two monoene;
- R—C is a chelating ligand;
- R is from the group consisting of phosphorus donors, oxygen donors, and nitrogen donors;
- C is a carbene;
- and
- X is an anionic counterion.
The invention(s) and shown and described herein.
Dependencies are inferred from the claim text.