Asymmetric catalysts
US-9221744-B2 · Dec 29, 2015 · US
Heterobimetallic catalysts and site-differentiated ligands for preparation thereof
US11833495B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11833495-B2 |
| Application number | US-202318124708-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 22, 2023 |
| Priority date | Jul 3, 2018 |
| Publication date | Dec 5, 2023 |
| Grant date | Dec 5, 2023 |
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Abstract
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Phosphine phosphonate and phenoxyphosphine ligands bearing polyethylene glycol (PEG) chains are used as described herein to produce heterobimetallic catalysts. The ligands can be metallated selectively with palladium or nickel and secondary metal ions to provide well-defined heterobimetallic compounds. These heterobimetallic complexes exhibit accelerated reaction rates and greater thermal stability in olefin polymerization compared to other catalysts.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for preparing heterobimetallic catalysts, comprising: reacting a compound having a structure of wherein A is Pd or Ni, Ph is phenyl, and B and C are independently selected from CH 3 , Cl, pyridine, phenyl, PPh 3 , wherein PPh 3 is triphenylphosphine, and PMe 3 , wherein PMe 3 is trimethylphosphine, with a metal salt, wherein the metal salt comprises any element of the s-block, d-block, or f-block in the periodic table to form a heterobimetallic catalyst. 2. The method of claim 1 , wherein the metal salt is a salt of Ca 2+ , Mg 2+ , Co 2+ , or Zn 2+ .
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Classifications
- B01J31/2243Primary
At least one oxygen and one nitrogen atom present as complexing atoms in an at least bidentate or bridging ligand · CPC title
- B01J31/2247Primary
At least one oxygen and one phosphorous atom present as complexing atoms in an at least bidentate or bridging ligand · CPC title
PO · CPC title
Ethene · CPC title
Bi- or polynuclear complexes, i.e. comprising two or more metal coordination centres, without metal-metal bonds, e.g. Cp(Lx)Zr-imidazole-Zr(Lx)Cp · CPC title
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- What does patent US11833495B2 cover?
- Phosphine phosphonate and phenoxyphosphine ligands bearing polyethylene glycol (PEG) chains are used as described herein to produce heterobimetallic catalysts. The ligands can be metallated selectively with palladium or nickel and secondary metal ions to provide well-defined heterobimetallic compounds. These heterobimetallic complexes exhibit accelerated reaction rates and greater thermal stabi…
- Who is the assignee on this patent?
- Univ Houston System
- What technology area does this patent fall under?
- Primary CPC classification B01J31/2243. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 05 2023 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).