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US4523942A
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4H-3,1-Benzoxazine derivatives, compositions and herbicidal use
Assignee: BASF SE
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Filing: 1983-01-31
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Granted: 1985-06-18
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Expires: 2003-01-31
Abstract
Abstract Novel 4H-3,1-benzoxazine derivatives of the formula ##STR1## where R 1 , R 2 and Y have the meanings given in the disclosure, a process for their preparation, and their use for combating unwanted plant growth.
Inventors
- 👤 Gerhard Hamprecht
- 👤 Juergen Varwig
- 👤 Bruno Wuerzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:39
CPC Classifications
C; C07; C07D; C07D265/00; C07D265/04; C07D265/12; C07D265/14; C07D265/20; C07D265/22; A; A01; A01N; A01N43/00; A01N43/72; A01N43/86; A01N47/00; A01N47/02; A01N47/04; C07C; C07C65/00; C07C65/21; C07C65/28
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
33 words
A 4H-3,1-benzoxazine derivative of the formula ##STR114## where R 1 is halogen, Y is oxygen or sulfur and R 2 is phenyl which is monosubstituted by haloalkyl of up to 3 carbon atoms.
Claim 2
Dependent Claim
33 words
A 4H-3,1-benzoxazine derivative of the formula ##STR114## where R 1 is halogen, Y is oxygen or sulfur and R 2 is phenyl which is monosubstituted by haloalkyl of up to 3 carbon atoms.
Claim 3
Dependent Claim
1 words
5-Chloro-2-(3'-trifluoromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
Claim 4
Dependent Claim
1 words
5-Chloro-2-(3'-trifluoromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
Claim 5
Dependent Claim
1 words
5-Fluoro-2-(3'-trifluoromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
Claim 6
Dependent Claim
1 words
5-Fluoro-2-(3'-trifluoromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
Claim 7
Dependent Claim
46 words
A herbicidal composition comprising a carrier and/or diluent and a herbicidally effective amount of a compound of the formula ##STR115## where R 1 is halogen, Y is oxygen or sulfur and R 2 is phenyl which is monosubstituted by haloalkyl of up to 3 carbon atoms.
Claim 8
Dependent Claim
46 words
A herbicidal composition comprising a carrier and/or diluent and a herbicidally effective amount of a compound of the formula ##STR115## where R 1 is halogen, Y is oxygen or sulfur and R 2 is phenyl which is monosubstituted by haloalkyl of up to 3 carbon atoms.
Claim 9
Dependent Claim
38 words
A herbicidal composition as set forth in claim 4 wherein in the compound of the formula I, R 1 is halogen, Y is oxygen and R 2 is phenyl monosubstituted by haloalkyl of up to 3 carbon atoms.
Claim 10
Dependent Claim
18 words
A herbicidal composition as set forth in claim 4 wherein the compound of the formula I is 5-chloro-2-(3'-trifluoromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
Claim 11
Dependent Claim
18 words
A herbicidal composition as set forth in claim 4 wherein the compound of the formula I is 5-fluoro-2-(3'-trifluoromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
Claim 12
Dependent Claim
18 words
A herbicidal composition as set forth in claim 4, wherein the compound of the formula I is 5-chloro-2-(3'-fluorodichloromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
Claim 13
Dependent Claim
18 words
A herbicidal composition as set forth in claim 4, wherein the compound of the formula I is 5-fluoro-2-(3'-difluorochloromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
Claim 14
Dependent Claim
31 words
A process for the control of unwanted plant growth, wherein a herbicide is used which contains at least one 4H-3,1-benzoxazine derivative of the formula I as set forth in claim 1.
Claim 15
Dependent Claim
24 words
A process for the control of unwanted plant growth as set forth in claim 10, wherein the compound of the formula I is 5-chloro-2-(3'-trifluoromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
Claim 16
Dependent Claim
24 words
A process for the control of unwanted plant growth as set forth in claim 10, wherein the compound of the formula I is 5-fluoro2-(3'-trifluoromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
Claim 17
Dependent Claim
24 words
A process for the control of unwanted plant growth as set forth in claim 10, wherein the compound of the formula I is 5-chloro-2-(3'-fluorodichloromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
Claim 18
Dependent Claim
24 words
A process for the control of unwanted plant growth as set forth in claim 10, wherein the compound of the formula I is 5-fluoro-2-(3'-difluorochloromethyl-phenyl)-4H-3,1-benzoxazin-4-one.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |