Optically-active di-[3-chloro-2-oxy-propyltrimethylammonium]-tartrate
US4692543A · kind A · utility
1Cited by
9References
4Claims
0Family size
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Key dates
| Filing date | Feb 25, 1986 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Feb 25, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C59/255
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the production of optically-active di-[3-chloro-2-oxy-propyltrimethylammonium]-tartrate. Racemic 3-chloro-2-oxy-propyltrimethylammonium-chloride is converted by racemate resolution with CaCl.sub.2, for example, into the optically-active di-[3-chloro-2-oxy-propyltrimethylammonium]-tartrate. Such optically-active tartrate compound is dissociated into calcium tartrate and optically-active 3-chloro-2-oxy-propyltrimethylammonium-chloride, and the latter is converted with inorganic cyanides. From the product, the production of optically-active carnitine nitrile chloride can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.