Iron-catalyzed selective production of methyl esters from aldehydes
US-10590062-B1 · Mar 17, 2020 · US
Ester synthesis using heterogeneous Au/TiO2 catalyst
US11827595B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11827595-B2 |
| Application number | US-201917309384-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 12, 2019 |
| Priority date | Nov 13, 2018 |
| Publication date | Nov 28, 2023 |
| Grant date | Nov 28, 2023 |
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Abstract
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A process for direct esterification of an alkyl aldehyde with an alkyl alcohol to produce an alkyl ester is disclosed. The process comprises reacting an alkyl aldehyde with an alkyl alcohol in the presence of an Au/TiOa catalyst, a base and an enal or oxygen to form an ester and an aldehyde. The process avoids liberation of water and avoids the step of oxidation of the alkyl aldehyde to an alkyl acid.
First claim
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We claim: 1. A process for preparing esters comprising: a) combining an alkyl aldehyde with an alkyl enal to form a first mixture; b) heating said mixture in the presence of an Au/TiO 2 catalyst, an alkyl alcohol and in the presence of a base to form a second mixture comprising an alkyl ester and an aldehyde; and c) recovering said alkyl ester and said aldehyde from said second mixture. 2. The process of claim 1 wherein said alkyl alcohol is methanol. 3. The process of claim 1 wherein said alkyl aldehyde is 2-ethylhexaldehyde. 4. The process of claim 1 wherein said alkyl enal is 2-ethylhexyl enal. 5. A process for preparing 2-ethylhexyl methyl ester comprising: a) combining 2-ethylhexaldehyde with 2-ethylhexenal to form a first mixture; b) heating said first mixture in the presence of an Au/TiO 2 catalyst, methanol and in the presence of a base to form a second mixture comprising methyl-2-ethylhexanoate and 2-ethylhexaldehyde; and c) recovering said methyl-2-ethylhexanoate and said 2-ethylhexaldehyde from said second mixture.
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- What does patent US11827595B2 cover?
- A process for direct esterification of an alkyl aldehyde with an alkyl alcohol to produce an alkyl ester is disclosed. The process comprises reacting an alkyl aldehyde with an alkyl alcohol in the presence of an Au/TiOa catalyst, a base and an enal or oxygen to form an ester and an aldehyde. The process avoids liberation of water and avoids the step of oxidation of the alkyl aldehyde to an alky…
- Who is the assignee on this patent?
- Eastman Chem Co
- What technology area does this patent fall under?
- Primary CPC classification C07C67/44. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 28 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).