Patent US4565568A successfully refreshed from Google Patents.
US4565568A
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US
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Pyridyl(oxy/thio)phenoxy compounds, herbicidal compositions and methods
Assignee: Dow Chemical Co
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Filing: 1983-05-23
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Granted: 1986-01-21
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Expires: 2003-05-23
Abstract
Abstract Certain novel pyridinyloxyphenoxy alkanoic acids, pyridinylthiophenoxy alkanoic acids, derivatives thereof and related compounds are described. More specifically, these novel compounds bear a fluorine substituent in the 3-position of the pyridinyl group and in the 5-position the substituent is selected from chlorine, CF3, CF2Cl or CF2H. These novel compounds exhibit surprising preemergent and postemergent activity in the control of grassy weeds.
Inventors
- 👤 Howard Johnston
- 👤 Lillian H. Troxell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:58
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/63; C07D213/64; C07D213/643; A; A01; A01N; A01N43/00; A01N43/34; A01N43/40; C07D213/61; C07D213/70; C07D213/78; C07D213/79; C07D213/84
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
72 words
A compound having herbicidal activity and having the formula ##STR30## wherein X is CF 3 , CHF 2 , CClF 2 , Br or Cl and T is O or S, or a resolved "R" enantiomer thereof, and the agriculturally acceptable salts, esters, and mono- or disubstituted or unsubstituted lower alkyl and phenyl amides thereof, wherein the substituents are selected from lower alkyl, lower alkoxy, halo, cyano, nitro, hydroxy, amino or carboxyl.
Claim 2
Dependent Claim
72 words
A compound having herbicidal activity and having the formula ##STR30## wherein X is CF 3 , CHF 2 , CClF 2 , Br or Cl and T is O or S, or a resolved "R" enantiomer thereof, and the agriculturally acceptable salts, esters, and mono- or disubstituted or unsubstituted lower alkyl and phenyl amides thereof, wherein the substituents are selected from lower alkyl, lower alkoxy, halo, cyano, nitro, hydroxy, amino or carboxyl.
Claim 3
Dependent Claim
15 words
Compound of claim 1 which is 2-(4-(3-fluoro-5-(trifluoromethyl)-2-pyridinyloxy)phenoxy)-propanoic acid and its agriculturally acceptable salts and esters.
Claim 4
Dependent Claim
8 words
Compound of claim 2 which is methyl 2-(4-(3-fluoro-5-(trifluoromethyl)-2-pyridinyloxy)phenoxy)propanoate.
Claim 5
Dependent Claim
8 words
The R-enantiomer of the compound of claim 2.
Claim 6
Dependent Claim
15 words
Compound of claim 1 which is 2-(4-(3-fluoro-5-chloro-2-pyridinyloxy)phenoxy)propanoic acid and its agriculturally acceptable salts and esters.
Claim 7
Dependent Claim
10 words
Compound of claim 5 which is 2-(4-(3-fluoro-5-chloro-2-pyridinyloxy)phenoxy)propanoic acid, methyl ester.
Claim 8
Dependent Claim
8 words
The R-enantiomer of the compound of claim 5.
Claim 9
Dependent Claim
15 words
Compound of claim 1 which is 2-(4-(5-bromo-3-fluoro-2-pyridinyloxy)phenoxy)propanoic acid and its agriculturally acceptable salts and esters.
Claim 10
Dependent Claim
82 words
A composition comprising an inert carrier in admixture with a herbicidally effective amount of a compound having the formula ##STR31## wherein X is CF 3 , CHF 2 , CClF 2 , Br or Cl and T is O or S, or a resolved "R" enantiomer thereof, and the agriculturally acceptable salts, esters and mono- or disubstituted or unsubstituted lower alkyl and phenyl amides thereof, wherein the substituents are selected from lower alkyl, lower alkoxy, halo, cyano, nitro, hydroxy, amino or carboxyl.
Claim 11
Dependent Claim
82 words
A composition comprising an inert carrier in admixture with a herbicidally effective amount of a compound having the formula ##STR31## wherein X is CF 3 , CHF 2 , CClF 2 , Br or Cl and T is O or S, or a resolved "R" enantiomer thereof, and the agriculturally acceptable salts, esters and mono- or disubstituted or unsubstituted lower alkyl and phenyl amides thereof, wherein the substituents are selected from lower alkyl, lower alkoxy, halo, cyano, nitro, hydroxy, amino or carboxyl.
Claim 12
Dependent Claim
13 words
Composition of claim 9 comprising a herbicidally-effective amount of 2-(4-(3-fluoro-5-(trifluoromethyl)-2-pyridyloxy)phenoxy)propanoic acid, methyl ester.
Claim 13
Dependent Claim
13 words
Composition of claim 9 comprising a herbicidally-effective amount of 2-(4-(3-fluoro-5-chloro-2-pyridinyloxy)phenoxy)propanoic acid, methyl ester.
Claim 14
Dependent Claim
13 words
Composition of claim 9 comprising a herbicidally-effective amount of 2-(4-(3-fluoro-5-bromo-2-pyridinyloxy)phenoxy)propanoic acid, methyl ester.
References Cited (Backward Citations)
US4302242A
Cited
GB2015995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-20 | 1989-07-22 | 1990-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-20 | 1993-07-22 | 1994-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-20 | 1997-07-22 | 1998-01-21 | $7700.00 | Window Closed / Lapsed |