US4443248A
Expired / Lapsed
US
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Phenoxyphenoxypropionic acids and derivatives, and their use as herbicides
Assignee: Velsicol Chemical LLC
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Filing: 1982-04-12
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Granted: 1984-04-17
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Expires: 2002-04-12
Abstract
Abstract This invention discloses novel herbicidal compounds of the formula <IMAGE> (I) wherein X is selected from the group consisting of halogen, nitro, cyano and trifluoromethyl; Y is selected from the group consisting of hydrogen, halogen, nitro and cyano; R1 is alkyl; R2 is selected the group consisting of hydrogen and alkyl; and R3 is selected from the group consisting of hydroxy, alkoxy, alkylthio, amino, alkylamino and dialkylamino and further herbicidal compositions and methods using said compounds.
Inventors
- 👤 Takeo Hokama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:14
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/14; C07C319/20; C07C327/00; A; A01; A01N; A01N39/00; A01N39/02; A01N39/04; C07C323/00; C07C323/22
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
71 words
A compound of the formula: ##STR6## wherein X is selected from the group consisting of halogen, nitro, cyano and trifluoromethyl; Y is selected from the group consisting of hydrogen, halogen, nitro and cyano; R 1 is lower alkyl; R 2 is selected from the group consisting of hydrogen and lower alkyl; and R 3 is selected from the group consisting of hydroxy, lower alkoxy, lower alkylthio, amino, lower alkylamino and di(loweralkyl)amino.
Claim 2
Dependent Claim
71 words
A compound of the formula: ##STR6## wherein X is selected from the group consisting of halogen, nitro, cyano and trifluoromethyl; Y is selected from the group consisting of hydrogen, halogen, nitro and cyano; R 1 is lower alkyl; R 2 is selected from the group consisting of hydrogen and lower alkyl; and R 3 is selected from the group consisting of hydroxy, lower alkoxy, lower alkylthio, amino, lower alkylamino and di(loweralkyl)amino.
Claim 3
Dependent Claim
28 words
An alkali metal, alkaline earth metal, ammonium, amine, lower alkylamine, di(loweralkyl)amine, lower alkanolamine, di(loweralkanol)amine or tri(loweralkanol)amine salt of a compound of claim 1 wherein R 3 is hydroxy.
Claim 4
Dependent Claim
7 words
The compound of claim 1, ethyl 2-[5-(2-chloro-4-trifluoromethylphenoxy)-2-methylthiophenoxy]priopionate.
Claim 5
Dependent Claim
7 words
The compound of claim 1, ethyl 2-[5-(2-bromo-4-nitrophenoxy)-2-(methylthio)phenoxy]propionate.
Claim 6
Dependent Claim
7 words
The compound of claim 1, S-methyl 2-[5-(2-chloro-4-cyanophenoxy)-2-(ethylthio)phenoxy]thiolopropionate.
Claim 7
Dependent Claim
6 words
The compound of claim 1, N,N-dimethyl-2-[5-(2,4-dichlorophenoxy)-2-(propylthio)phenoxy]propionamide
Claim 8
Dependent Claim
7 words
The compound of claim 1, propyl 2-[5-(2-nitro-4-trifluoromethylphenoxy)-2-methylthiophenoxy]propionate.
Claim 9
Dependent Claim
6 words
The compound of claim 1, 2-[5-(2-cyano-4-fluorophenoxy)-2-methylthiophenoxy]propionamide.
Claim 10
Dependent Claim
21 words
A herbicidal composition consisting essentially of an inert carrier and, in a quantity toxic to weeds, a compound of claim 1.
Claim 11
Dependent Claim
21 words
A herbicidal composition consisting essentially of an inert carrier and, in a quantity toxic to weeds, a compound of claim 2.
Claim 12
Dependent Claim
29 words
A method of controlling weeds which consists essentially of contacting the weeds or the locus of the weeds with a herbicidally effective amount of a composition of claim 9.
Claim 13
Dependent Claim
29 words
A method of controlling weeds which consists essentially of contacting the weeds or the locus of the weeds with a herbicidally effective amount of a composition of claim 10.
References Cited (Backward Citations)
DE1641C
Cited
US4070177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |