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Halide-mediated dealkylation of phosphotriesters
US10137324B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10137324-B2 |
| Application number | US-201615191431-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 23, 2016 |
| Priority date | Jun 23, 2016 |
| Publication date | Nov 27, 2018 |
| Grant date | Nov 27, 2018 |
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- Title
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Abstract
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In one embodiment, a method includes contacting a phosphotriester and a halogen salt in a polar solvent. In another embodiment, a method for dealkylating tributylphosphate includes contacting tributylphosphate and a halogen salt in a polar solvent.
First claim
Opening claim text (preview).
What is claimed is: 1. A method, comprising: contacting a phosphotriester and a halogen salt in a polar solvent. 2. The method of claim 1 , wherein the phosphotriester is tributylphosphate. 3. The method of claim 2 , wherein the contacting results in conversion of the tributylphosphate to dibutylphosphate and monobutylphosphate. 4. The method of claim 1 , wherein the phosphotriester is a flame retardant. 5. The method of claim 1 , wherein the phosphotriester is a lubricant. 6. The method of claim 1 , wherein the phosphotriester is present in a mixture comprising the phosphotriester and a nonpolar solvent, wherein the mixture is contacted with the halogen salt in the polar solvent. 7. The method of claim 1 , wherein a halide component of the halogen salt is an iodide. 8. The method of claim 1 , wherein the halogen salt is present in at least a 1:1 molar ratio relative to the phosphotriester. 9. The method of claim 1 , wherein the halogen salt is present in at least a 2:1 molar ratio relative to the phosphotriester. 10. The method of claim 1 , wherein the halogen salt includes a Group I or Group II, or a transition metal, or a polyatomic cation. 11. The method of claim 1 , wherein the polar solvent is dimethylsulfoxide (DMSO). 12. The method of claim 1 , wherein the polar solvent is an organic solvent. 13. The method of claim 1 , wherein the polar solvent is water. 14. The method of claim 1 , wherein the contacting is conducted at a temperature below a boiling point of the polar solvent. 15. The method of claim 1 , wherein the phosphotriester is present in a nonpolar solvent during the contacting with the halogen salt in the polar solvent. 16. The method of claim 1 , wherein the phosphotriester is tributylphosphate, wherein the contacting results in a chemical reaction as follows: where X is a halide, and Y is a metal or polyatomic cation. 17. A method for dealkylating tributylphosphate, the method comprising: contacting tributylphosphate and a halogen salt in a polar solvent. 18. The method of claim 17 , wherein the polar solvent is dimethylsulfoxide (DMSO). 19. The method of claim 17 , wherein a halide component of the halogen salt is an iodide. 20. The method of claim 17 , wherein the halogen salt is present in at least a 1:1 molar ratio relative to the tributylphosphate. 21. The method of claim 17 , wherein the contacting is conducted at a temperature below a boiling point of the polar solvent.
Assignees
Inventors
Classifications
containing nitrogen or phosphorus · CPC title
- A62D3/30Primary
by reacting with chemical agents · CPC title
- C07F9/11Primary
with hydroxyalkyl compounds without further substituents on alkyl · CPC title
with hydroxyalkyl compounds with further substituents on alkyl · CPC title
with hydroxyaryl compounds · CPC title
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Frequently asked questions
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- What does patent US10137324B2 cover?
- In one embodiment, a method includes contacting a phosphotriester and a halogen salt in a polar solvent. In another embodiment, a method for dealkylating tributylphosphate includes contacting tributylphosphate and a halogen salt in a polar solvent.
- Who is the assignee on this patent?
- L Livermore Nat Security Llc
- What technology area does this patent fall under?
- Primary CPC classification A62D3/30. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Nov 27 2018 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).