3-acyloxymethyl-3-butenyl carboxylate compound and method for producing 4-alkyl-3-methylenebutyl carboxylate
US-9499468-B2 · Nov 22, 2016 · US
Process for preparing 2,2-difluoroethanol
US8975448B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8975448-B2 |
| Application number | US-201214232170-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 16, 2012 |
| Priority date | Jul 19, 2011 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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Process for preparing 2,2-difluoroethanol, comprising the following steps: reacting 1-chloro-2,2-difluoroethane with an alkali metal salt of formic acid or acetic acid in a suitable solvent to give the corresponding 2,2-difluoroethyl formate or 2,2-difluoroethyl acetate, and transesterifying the 2,2-difluoroethyl formate or 2,2-difluoroethyl acetate from step (i) in the presence of an alcohol and optionally of a base.
First claim
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The invention claimed is: 1. A process for preparing 2,2-difluoroethanol, comprising: (i): reacting 1-chloro-2,2-difluoroethane with an alkali metal salt of formic acid or acetic acid in a suitable solvent to give the corresponding 2,2-difluoroethyl formate or 2,2-difluoroethyl acetate, wherein, 1-chloro-2,2-difluoroethane is added gradually to a mixture, heated to a desired reaction temperature, of solvent and alkali metal salt of formic acid or acetic acid; (ii): transesterify…
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Chemistry & Metallurgy · mapped topic
- C07C67/11Primary
Chemistry & Metallurgy · mapped topic
- C07C29/147Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8975448B2 cover?
- Process for preparing 2,2-difluoroethanol, comprising the following steps: reacting 1-chloro-2,2-difluoroethane with an alkali metal salt of formic acid or acetic acid in a suitable solvent to give the corresponding 2,2-difluoroethyl formate or 2,2-difluoroethyl acetate, and transesterifying the 2,2-difluoroethyl formate or 2,2-difluoroethyl acetate from step (i) in the presence of an alcohol a…
- Who is the assignee on this patent?
- Müller Thomas Norbert, Lui Norbert, Moczarski Stefan, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C07C67/11. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 10 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).