Method for producing optically active isopulegol and optically active menthol
US-2015329452-A1 · Nov 19, 2015 · US
Method for manufacturing isopulegol
US11225448B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11225448-B2 |
| Application number | US-202117156817-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 25, 2021 |
| Priority date | Jan 30, 2020 |
| Publication date | Jan 18, 2022 |
| Grant date | Jan 18, 2022 |
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- Title
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Abstract
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A method for manufacturing isopulegol includes the step of diastereoselective ring-closing a citronellal using an aluminum compound of formula (1) below. In formula (1), X represents a halogen atom, Y represents a halogen atom or a hydrogen atom, and R1 represents a phenyl group or a cycloalkyl group of 5 to 12 carbons.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for manufacturing isopulegol comprising a step of diastereoselective ring-closing a citronellal using an aluminum compound of formula (1) below: wherein X is a chlorine atom or a bromine atom, Y is a chlorine atom or a hydrogen atom, and R 1 is a cyclohexyl group, wherein the step of diastereoselective ring-closing a citronellal is performed in the presence of methyl acetoacetate.
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Classifications
- C07C29/14Primary
of a —CHO group · CPC title
The ring being saturated · CPC title
with unsaturation only outside the ring · CPC title
by reaction with aldehydes or ketones · CPC title
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- What does patent US11225448B2 cover?
- A method for manufacturing isopulegol includes the step of diastereoselective ring-closing a citronellal using an aluminum compound of formula (1) below. In formula (1), X represents a halogen atom, Y represents a halogen atom or a hydrogen atom, and R1 represents a phenyl group or a cycloalkyl group of 5 to 12 carbons.
- Who is the assignee on this patent?
- Takasago Perfumery Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C07C29/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 18 2022 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).