Hydroformylation of triglycerides in a self-emulsifying medium
US-2016289596-A1 · Oct 6, 2016 · US
Oxidative dehydrogenation of lactate esters to pyruvate esters
US10106487B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10106487-B2 |
| Application number | US-201615735530-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 10, 2016 |
| Priority date | Jun 10, 2015 |
| Publication date | Oct 23, 2018 |
| Grant date | Oct 23, 2018 |
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Abstract
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The present invention relates to a simple one step oxidative dehydrogenation process for the synthesis of alkyl pyruvate with 100% selectivity towards alkyl pyruvate comprising reacting an alkyl lactate in the presence of catalyst at the temperature ranging from 25-100° C. for the time period ranging from 5 to 40 hours in an organic solvent and hydrogen peroxide to afford alkyl pyruvate.
First claim
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What is claimed is: 1. A one-step oxidative dehydrogenation process for the synthesis of an alkyl pyruvate from an alkyl lactate in the presence of a metal catalyst at a temperature ranging from 25-100° C. for a time period ranging from 5 to 40 hours in a peroxide selected from the group consisting of tert-butyl hydrogen peroxide and meta-chloroperbenzoic acid and optionally in a solvent to obtain the alkyl pyruvate, wherein the metal catalyst comprises: a metal selected from the group consisting of Co, Cr, Fe, Mo, W, Ti, Cu, Cr, Mn, Ag, Au, Ni, Pd, or Pt; and one or more species bound to the metal selected from the group consisting of oxo, a halide, DMSO, DMF, bipyridine, benzthiazole, acetate, nitrate, and acetylacetonate. 2. The process as claimed in claim 1 , wherein said alkyl lactates are selected from the group consisting of methyl lactate, ethyl lactate, propyl lactate and butyl lactate. 3. The process as claimed in claim 1 , wherein said solvent is selected from the group consisting of water, acetonitrile, methanol, ethanol and toluene. 4. The process as claimed in claim 1 , wherein said process is carried out without solvent. 5. The process as claimed in claim 1 , wherein said process has a selectivity towards pyruvate formation of greater than 90%. 6. The process as claimed in claim 1 , wherein said process provides greater than 90% conversion of alkyl lactates.
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- C07C67/313Primary
by introduction of doubly bound oxygen containing functional groups, e.g. carboxyl groups · CPC title
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- What does patent US10106487B2 cover?
- The present invention relates to a simple one step oxidative dehydrogenation process for the synthesis of alkyl pyruvate with 100% selectivity towards alkyl pyruvate comprising reacting an alkyl lactate in the presence of catalyst at the temperature ranging from 25-100° C. for the time period ranging from 5 to 40 hours in an organic solvent and hydrogen peroxide to afford alkyl pyruvate.
- Who is the assignee on this patent?
- Council Scient Ind Res
- What technology area does this patent fall under?
- Primary CPC classification C07C67/313. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 23 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).