US4485252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-Phenyl-alk-1-enyl-cyclopropane-carboxylic acid intermediates
Assignee: Bayer AG
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Filing: 1982-05-05
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Granted: 1984-11-27
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Expires: 2002-05-05
Abstract
Abstract 2-Phenyl-alk-1-enyl-cyclopropane-carboxylic acid esters of the formula ##STR1## in which R each independently is hydrogen, halogen, cyano, nitro and, in each case optionally halogen-substituted, alkyl, alkoxy, alkylenedioxy or alkylthio, R 1 is optionally halogen-substituted alkyk, and R 2 is a radical customary in the alcohol part of pyrethroids which exhibit insecticidal and acaricidal activity. They are made from the corresponding alkyl esters which are new and made by novel processes.
Inventors
- 👤 Rainer Fuchs
- 👤 Ingeborg Hammann
- 👤 Bernhard Homeyer
- 👤 Wilhelm Stendel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:04
CPC Classifications
A; A01; A01N; A01N53/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
38 words
A 2-phenyl-alk-1-enyl-cyclopropane-carboxylic acid or derivative of the formula ##STR58## in which R is hydrogen or halogen, R 1 is trifluoromethyl or alkyl of 1-2 carbon atoms, and R 6 is halogen, OH or OC 1 -C 4 -alkyl.
Claim 2
Dependent Claim
38 words
A 2-phenyl-alk-1-enyl-cyclopropane-carboxylic acid or derivative of the formula ##STR58## in which R is hydrogen or halogen, R 1 is trifluoromethyl or alkyl of 1-2 carbon atoms, and R 6 is halogen, OH or OC 1 -C 4 -alkyl.
Claim 3
Dependent Claim
15 words
A compound according to claim 1, wherein R 6 is --O--C 1 -C 4 -alkyl.
References Cited (Backward Citations)
US4157447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |