Monophosphite ligands having a tert-butyloxycarbonyl group
US-9221850-B2 · Dec 29, 2015 · US
Process for preparing diketonato-rhodium(I)-carbonyl complexes
US9163045B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9163045-B2 |
| Application number | US-201314397131-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 25, 2013 |
| Priority date | Apr 25, 2012 |
| Publication date | Oct 20, 2015 |
| Grant date | Oct 20, 2015 |
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Abstract
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The invention relates to a process for preparing diketonato-rhodium(I)-carbonyl complexes, especially diketonato-rhodium(I)-triorganophosphine-carbonyl complexes, for example Rh(CO)(PPh 3 )acac. The process according to the invention is a “one-pot synthesis” and features a process procedure without intermediate isolation stages. After introduction of an Rh(III) halide precursor into a solvent and sparging with carbon monoxide (CO), a diketo compound of the R′—C(═O)—CH 2 —C(═O)—R″ type and a base are added, forming the intermediate compound diketonato-Rh(CO) 2 . After addition of a triorganophosphine of the PR 3 type, the reaction mixture is heated and the diketonatocarbonyltriorganophosphine-rhodium(I) complex is removed. The process enables a rapid operation and a high yield. The complex Rh(CO)(PPh 3 )acac prepared in accordance with the invention, because of its purity, is particularly suitable as a catalyst or precatalyst for homogeneous catalysis, for example for hydroformylation reactions.
First claim
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The invention claimed is: 1. A process for preparing the diketonatocarbonyltriorganophosphinerhodium(I) complex having the formula (I) where R is C 1 -C 10 -alkyl, C 5 -C 10 -cycloalkyl, C 6 -C 12 -aryl, or C 4 -C 12 -heteroaryl and R′ and R″ are each, independent of one another, a C 1 -C 5 -alkyl, C 5 -C 10 -cycloalkyl, or C 6 -C 12 -aryl, where R, R′ and R…
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Chemistry & Metallurgy · mapped topic
- C07F15/0073Primary
Chemistry & Metallurgy · mapped topic
- C07F15/008Primary
Chemistry & Metallurgy · mapped topic
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- What does patent US9163045B2 cover?
- The invention relates to a process for preparing diketonato-rhodium(I)-carbonyl complexes, especially diketonato-rhodium(I)-triorganophosphine-carbonyl complexes, for example Rh(CO)(PPh 3 )acac. The process according to the invention is a “one-pot synthesis” and features a process procedure without intermediate isolation stages. After introduction of an Rh(III) halide precursor into a solvent a…
- Who is the assignee on this patent?
- Umicore Ag & Co Kg
- What technology area does this patent fall under?
- Primary CPC classification C07F15/0073. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 20 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).