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US 6,806,391 B2Granted
Process for the carbonylation of ethylenically unsaturated compounds and bidentate diphosphine composition used in this process
AssigneeShell Oil Company
InventorEit Drent
Life of this patent
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Abstract
Process for the carbonylation of optionally substituted ethylenically unsaturated compounds by reaction with carbon monoxide and a coreactant in the presence of a catalyst system. The catalyst system includes (a) a source of Pt group metal cations, (b) a certain bidentate diphosphine composition.
Claims15
A process for the carbonylation of optionally substituted ethylenically unsaturated compounds by reaction with carbon monoxide and a coreactant in the presence of a catalyst system including:
- (a) a source of Pt group metal cations,
- (b) a bidentate diphosphine composition
- wherein more than 60% w/w of bidentate diphosphine present in the bidentate diphosphine composition has the general formula II
- X1—R—X2 (II)
- wherein X1 and X2 independently represent an optionally substituted symmetrical phosphabicycloalkyl group, having at least 5 ring atoms;
- and R represents a bivalent organic bridging group, connecting both phosphorus atoms.
3 more elements
Dependencies are inferred from the claim text.