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US4485238A
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Preparation of ((6-substituted phenoxy-2-pyridinyl)-methyl)-3-(2,2-bis(trifluoromethyl)-1-ethenyl)-2,2-dimethylcyclopropane carboxylates
Assignee: Dow Chemical Co
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Filing: 1983-07-06
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Granted: 1984-11-27
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Expires: 2003-07-06
Abstract
Abstract ((6-(Substituted phenoxy)-2-pyridinyl)methyl)-3-(2,2-bis(trifluoromethyl)-1-ethenyl)-2,2-dimethylcyclopropane carboxylates and the geometric and optical isomers thereof are prepared by the reaction of an appropriate cyano((6-(substituted phenoxy)-2-pyridinyl)methyl)-2,2-dimethyl-3-cyclopropane carboxaldehyde with tetrakis(trifluoromethyl)-1,3-dithioetane. These compounds exhibit a high degree of insecticidal activity and are so employed.
Inventors
- 👤 Donald L. Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:59
CPC Classifications
A; A01; A01N; A01N53/00; C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/63; C07D213/64
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
108 words
A method for preparing a compound corresponding to the formula ##STR9## wherein X independently represents hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, alkylthio of 1 to 4 carbon atoms, alkylsulfonyl of 1 to 4 carbon atoms, trifluoromethyl, 3,4-methylenedioxy, chloro, fluoro or bromo and n represents an integer of 1 or 2 which comprises reacting, under anhydrous conditions and at a temperature of from about minus 100° to about minus 20° C., from about 1 to about 2 moles of an appropriate cyano ((6-(substituted phenoxy)-2-pyridinyl)methyl)-2,2-dimethyl-3-cyclopropanecarboxyaldehyde with about one mole of tetrakis (trifluoromethyl)-1,3-dithioetane in the presence of triphenyl phosphine and a solvent.
Claim 2
Independent Claim
108 words
A method for preparing a compound corresponding to the formula ##STR9## wherein X independently represents hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, alkylthio of 1 to 4 carbon atoms, alkylsulfonyl of 1 to 4 carbon atoms, trifluoromethyl, 3,4-methylenedioxy, chloro, fluoro or bromo and n represents an integer of 1 or 2 which comprises reacting, under anhydrous conditions and at a temperature of from about minus 100° to about minus 20° C., from about 1 to about 2 moles of an appropriate cyano ((6-(substituted phenoxy)-2-pyridinyl)methyl)-2,2-dimethyl-3-cyclopropanecarboxyaldehyde with about one mole of tetrakis (trifluoromethyl)-1,3-dithioetane in the presence of triphenyl phosphine and a solvent.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein the compound prepared is cyano((6-phenoxy-2-pyridinyl)methyl)-3-(2,2-bis(trifluoromethyl)-1-ethenyl)-2,2-dimethylcyclopropane carboxylate.
References Cited (Backward Citations)
US4000181A
Cited
DE2547534A1
Cited
US3961070A
Cited
US3979519A
Cited
US3987079A
Cited
US3962458A
Cited
US4163787A
Cited
US4256893A
Cited
US4221799A
Cited
US4228172A
Cited
US4262001A
Cited
US4342770A
Cited
JPS6011106A
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 |