Processes and intermediates for preparing substituted chromanol derivatives
US6355825B1 · kind B1 · utility
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1References
3Claims
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Assignee
Inventors
Key dates
| Filing date | Mar 21, 2001 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Mar 21, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F5/025
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to processes for preparing a compound of the formula and the enantiomer of said compound, wherein the benzoic acid moiety is attached at position 6 or 7 of the chroman ring, and R1, R2, and R3 are as defined herein. The invention further relates to intermediates that are useful in the preparation of the compound of formula X above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.