Catalytic synthesis of vitamin A intermediate
US-9040742-B2 · May 26, 2015 · US
Intermediates for the vitamin A and β-carotene synthesis
US9309194B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9309194-B2 |
| Application number | US-201214128802-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 14, 2012 |
| Priority date | Jun 22, 2011 |
| Publication date | Apr 12, 2016 |
| Grant date | Apr 12, 2016 |
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- Title
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Abstract
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The present invention relates to compounds of formula (I) wherein R 1 signifies a C 1 -C 15 alkyl moiety or a C 2 to C 18 alkenyl moiety, to their process of production as well as to their use in organic synthesis, especially as intermediates (building blocks) in the synthesis of vitamin A or β-carotene or derivatives thereof, or other carotenoids, e.g. canthaxanthin, astaxanthin or zeaxanthin, preferably vitamin A.
First claim
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The invention claimed is: 1. A compound of formula (I): wherein R 1 signifies a C 1 -C 15 alkyl moiety or a C 2 -C 18 is alkenyl moiety. 2. The compound according to claim 1 , wherein R 1 is a linear C 1 -C 15 alkyl moiety. 3. The compound according to claim 1 , wherein R 1 is methyl, ethyl or pentadecyl. 4. The compound according to claim 1 , wherein R 1 is an unbranched C 2 -C 18 alkenyl moiety having more than three C-C double bonds. 5. The compound according to claim 1 , wherein the compound of formula (I) is a pure stereoisomeric form. 6. The compound according to claim 1 , wherein the compound of formula (I) is a mixture of stereoisomeric forms. 7. A process for production of a compound of formula (I) according to claim 1 , wherein the process comprises reducing, in the presence of 2-methyl-CBS-oxazaborolidine and borane dimethyl sulphide, a compound of formula (II): wherein R 1 signifies a C 1 -C 15 alkyl moiety or a C 2 -C 18 alkenyl moiety.
Assignees
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Classifications
Chemistry & Metallurgy · mapped topic
not being part of —CHO groups · CPC title
by hydroxy groups · CPC title
Palladium compounds · CPC title
- C07C403/12Primary
by esterified hydroxy groups · CPC title
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Frequently asked questions
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- What does patent US9309194B2 cover?
- The present invention relates to compounds of formula (I) wherein R 1 signifies a C 1 -C 15 alkyl moiety or a C 2 to C 18 alkenyl moiety, to their process of production as well as to their use in organic synthesis, especially as intermediates (building blocks) in the synthesis of vitamin A or β-carotene or derivatives thereof, or other carotenoids, e.g. canthaxanthin, astaxanthin or zeaxant…
- Who is the assignee on this patent?
- Bonrath Werner, Netscher Thomas, Schütz Jan, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C07C403/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 12 2016 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).