Method for producing alpha-fluoro acrylic acid ester, and composition containing highly-pure fluorocyclopropane derivative, and composition containing highly-pure alpha-fluoro acrylic acid ester
US-2019263746-A1 · Aug 29, 2019 · US
Process for the manufacture of 2-pentyn-1-ol
US9045404B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9045404-B2 |
| Application number | US-201013389110-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 5, 2010 |
| Priority date | Aug 6, 2009 |
| Publication date | Jun 2, 2015 |
| Grant date | Jun 2, 2015 |
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Abstract
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The present invention is directed to a process for the manufacture of 2-pentyn-1-ol starting from 2-propyn-1-ol via the following intermediates (I), (II) wherein R 1 is H or linear C 1-6 alkyl, R 2 is linear C 1-6 alkyl or branched C 3-6 alkyl and R 3 is linear C 1-6 alkyl, as well as to the intermediates themselves.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for the manufacture of 2-pentyn-1-ol starting from 2-propyn-1-ol comprising the following steps: a) preparing a ketal of the formula I starting from 2-propynol in the presence of an acid catalyst; b) reacting the ketal of formula I with an alkyl halide selected from the group consisting of ethyl chloride, ethyl bromide and ethyl iodide…
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- C07C41/48Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9045404B2 cover?
- The present invention is directed to a process for the manufacture of 2-pentyn-1-ol starting from 2-propyn-1-ol via the following intermediates (I), (II) wherein R 1 is H or linear C 1-6 alkyl, R 2 is linear C 1-6 alkyl or branched C 3-6 alkyl and R 3 is linear C 1-6 alkyl, as well as to the intermediates themselves.
- Who is the assignee on this patent?
- Bonrath Werner, Pace Francesco, Fischesser Jocelyn, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C07C41/48. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 02 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).