Resolution process using L or D N-methyl-ephedrine
US4257976A · kind A · utility
6Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1979 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Nov 20, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/487
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the resolution of DL-cis chrysanthemic acid or DL-trans chrysanthemic acid with L or D N-methyl-ephedrine to form the corresponding salt and acid hydrolyzing the same which resolved acids are intermediates for preparing esters having a remarkable insecticidal activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.