Method for producing aldehydes by hydroformylation in the presence of crown ether
US6388142B1 · kind B1 · utility
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4References
20Claims
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Key dates
| Filing date | May 16, 2000 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | May 16, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/50
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a method for producing aldehydes by reacting one olefine containing 3 to 12 carbon atoms with hydrogen and carbon monoxide in the presence of one rhodium catalyst. The invention is characterized in that (a) the rhodium catalyst is present in an aqueous phase, whereby the aqueous phase contains i) rhodium in an elemental or bonded form, ii) one trisulfonated triaryl phosphine, and iii) one crown etherl (b) the olefine is present in the reaction conditions in a liquid organic phase which cannot be mixed with the aqueous phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.