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US 6,806,389 B1Granted
Catalyst for Pauson-Khand reaction
AssigneeAstraZeneca AB
InventorsAlex Christian Comely, Sue Elizabeth Gibson, Neil James Hales
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Abstract
The invention relates to the use of an immobilized transition metal carbonyl complex as a catalyst in the Pauson-Khand reaction and to processes using such as catalyst.
Claims7
A process for the preparation of a cyclopentenone ring which comprises reacting carbon monoxide, an alkyne-containing compound and an alkene-containing compound in the presence of a catalyst, where the catalyst comprises:
- a catalytically active component selected from the group consisting of a transition metal-containing carbonyl compound, a π-alkyne-transition metal-containing carbonyl complex and mixtures thereof;
- a support;
- and
- a linking group connecting the catalytically active component to the support,
- wherein the alkyne that is part of the π-alkyne-transition metal-containing carbonyl complex is the same as the alkyne-containing compound or is readily displaced by the alkyne-containing compound.
2 more elements
Dependencies are inferred from the claim text.