Use of sulfamic acids as resolving agent
US7345202B2 · kind B2 · utility
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4References
21Claims
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Assignee
Inventors
Key dates
| Filing date | Jun 7, 2002 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | Feb 26, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C307/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the use of chiral sulfamic acids as resolving agents, the sulfamic acid having the formula (R1,R2)N—SO3H, wherein: R1 and R2, being the same or different, represent a hydrogen atom or a C1-C30 linear, branched or cyclic (hetero)-aliphatic or (hetero)-aromatic group, provided that R1 and R2 are not both hydrogen and that at least one of the R1 and R2 groups is chiral. Further, methods for resolving enantiomeric mixtures are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.