Methods for preparation of lycopenes from C15-wittig salts and methods for purification of high all-E containing and high 6Z containing C15-wittig salts
US9272960B2 · kind B2 · utility
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Key dates
| Filing date | Jul 9, 2014 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Jul 9, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/09
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to methods for preparation of lycopenes, especially to lycopenes with high all-E contents or high 6Z contents from C15-Wittig slats mixtures. (with high all-E-contents and high 6Z-contents, respectively). C15-Wittig slats mixtures are purified and 6Z-C15-Wittig salts are extracted from the mixtures. The extracted 6Z-C15-Wittig salts are, used in the synthesis of lycopenes with high 6Z contents and the residues are used in the synthesis of lycopenes with high All-E contents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.