Method for purification of terpenoid amino alcohol derivatives
US11739050B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Sep 7, 2021 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Oct 8, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided is a method of purifying a terpenoid amino alcohol derivative, including providing a crude terpenoid amino alcohol derivative; performing an acid/base crystallization process of the crude terpenoid amino alcohol derivative to obtain an organic salt; and reacting the organic salt with NaOH and toluene to obtain a purified terpenoid amino alcohol derivative. Also provided is a method of preparing p-mentha-2,8-diene-1-ol from the purified terpenoid amino alcohol derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.