Novel lactones of cis 2,2-dimethyl-cyclopropane-1-carboxylic acid and their use
US4281182A · kind A · utility
1Cited by
4References
5Claims
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Key dates
| Filing date | Apr 6, 1979 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Apr 6, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C62/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel lactones of cis 2,2-dimethyl-cyclopropane-1-carboxylic acids of the formula ##STR1## wherein X.sub.1, X.sub.2 and X.sub.3 when identical are selected from the group consisting of chlorine and bromine and when at least two are different, are selected from the group consisting of fluorine, chlorine and bromine and a novel process for their preparation and a process for the preparation of cis 2,2-dimethyl-cyclopropane-1-carboxylic acids of the formula ##STR2## The acids of formula IV are useful to prepare esters of elevated insecticidal activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.