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US-2024409523-A1 · Dec 12, 2024 · US
Process for the preparation of 2 substituted tetrahydropyranols
US9428481B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9428481-B2 |
| Application number | US-201414242956-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 2, 2014 |
| Priority date | May 27, 2010 |
| Publication date | Aug 30, 2016 |
| Grant date | Aug 30, 2016 |
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Abstract
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The present invention relates to a process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyrans by reacting 3-methylbut-3-en-1-ol (isoprenol) with the corresponding alkenealdehydes in the presence of a strongly acidic ion exchanger with subsequent hydrogenation. Specifically, the present invention relates to a corresponding process for the preparation of 2-isobutyl-4-hydroxy-4-methyltetrahydropyran by reacting isoprenol with prenal, with subsequent hydrogenation.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyrans of the formula (I) where the radical R 1 is a straight-chain or branched alkyl radical having 1 to 5 carbon atoms, and R 2 is hydrogen or a straight-chain or branched alkyl radical having 1 to 3 carbon atoms, which comprises reacting iso…
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- C07D309/10Primary
Chemistry & Metallurgy · mapped topic
Cross-Sectional Technologies · mapped topic
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- What does patent US9428481B2 cover?
- The present invention relates to a process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyrans by reacting 3-methylbut-3-en-1-ol (isoprenol) with the corresponding alkenealdehydes in the presence of a strongly acidic ion exchanger with subsequent hydrogenation. Specifically, the present invention relates to a corresponding process for the preparation of 2-isobutyl-4-hydroxy-…
- Who is the assignee on this patent?
- Basf Se
- What technology area does this patent fall under?
- Primary CPC classification C07D309/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 30 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).