Process for the production of dimethylcyclopropanecarboxylic acid
US5149869A · kind A · utility
1Cited by
0References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1991 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Dec 6, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/343
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production or R,S-2,2-dimethylcyclopropanecarboxylic acid starting from isobutylene oxide and a phosphonoacetic acid trialkyl ester. In this way, first the R,S-2,2-dimethylcyclopropanecarboxylic acid-C.sub.1 -C.sub.4 alkyl ester is formed, which then is hydrolyzed to the corresponding acid. R,S-2,2-Dimethylcyclopropanecarboxylic acid is an important intermediate product for the production of S-(+)-2,2-dimethylcyclopropanecarboxamide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.