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US4494979A
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Benzofuran sulfamates
Assignee: EIDP Inc
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Filing: 1982-06-15
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Granted: 1985-01-22
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Expires: 2002-06-15
Abstract
Abstract Benzofuran sulfamates are useful as plant growth regulants and in particular as herbicides.
Inventors
- 👤 Morris P. Rorer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:56
CPC Classifications
C; C07; C07D; C07D521/00; A; A01; A01N; A01N47/00; A01N47/08; A01N47/28; A01N47/36; C07D307/00; C07D307/77; C07D307/78; C07D307/86
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
420 words
A compound of the formula: ##STR64## wherein Q is O, S or SO 2 ; Q 1 is CR 3 R 4 or O; L is OSO 2 NHCONHA; R 1 is H or C 1 -C 3 alkyl; R 2 is H or CH 3 ; R 3 is H or CH 3 ; R 4 is H or CH 3 ; R 5 is H, CH 3 , OCH 3 , Cl, Br, NO 2 , CO 2 R 7 , SO 2 R 8 , OSO 2 R 9 or SO 2 NR 10 R 11 ; R 6 is H or C 1 -C 3 alkyl; R 6 ' is H or CH 3 ; R 7 is C 1 -C 3 alkyl, CH 2 CH═CH 2 , CH 2 CH 2 OCH 3 or CH 2 CH 2 Cl; R 8 is C 1 -C 3 alkyl; R 9 is C 1 -C 3 alkyl or CF 3 ; R 10 and R 11 are independently C 1 -C 2 alkyl; A is ##STR65## X is CH 3 or OCH 3 ; Y is Cl, CH 3 , OCH 3 , OC 2 H 5 , CH 2 OCH 3 , NH 2 , NHCH 3 , N(CH 3 ) 2 , CH(OCH 3 ) 2 or ##STR66## and Z is CH; provided that (1) L is fixed at the 4- or 7-position; and when L is at the 4-position, then R 5 is at the 5-position, and when L is at the 7-position, then R 5 is at the 6-position; (2) in Formulae I and II, when Q is O and L is in the 4-position, and R 5 is other than H, then R 1 and R 6 are other than H; (3) in Formula II, when Q is O and L is in the 7-position, and R 5 is other than H, then R 6 and R 6 ' are other than H; (4) in Formula II, when Q is S or SO 2 and R 5 is other than H, Br or NO 2 , then R 6 and R 6 ' are other than H; (5) in Formula I, when Q is S, then R 5 is other than SO 2 R 8 ; (6) when Q 1 is O, then Q is O and R 5 is H; and (7) the total number of carbon atoms in R 1 to R 4 are less than or equal to 4.
Claim 2
Dependent Claim
420 words
A compound of the formula: ##STR64## wherein Q is O, S or SO 2 ; Q 1 is CR 3 R 4 or O; L is OSO 2 NHCONHA; R 1 is H or C 1 -C 3 alkyl; R 2 is H or CH 3 ; R 3 is H or CH 3 ; R 4 is H or CH 3 ; R 5 is H, CH 3 , OCH 3 , Cl, Br, NO 2 , CO 2 R 7 , SO 2 R 8 , OSO 2 R 9 or SO 2 NR 10 R 11 ; R 6 is H or C 1 -C 3 alkyl; R 6 ' is H or CH 3 ; R 7 is C 1 -C 3 alkyl, CH 2 CH═CH 2 , CH 2 CH 2 OCH 3 or CH 2 CH 2 Cl; R 8 is C 1 -C 3 alkyl; R 9 is C 1 -C 3 alkyl or CF 3 ; R 10 and R 11 are independently C 1 -C 2 alkyl; A is ##STR65## X is CH 3 or OCH 3 ; Y is Cl, CH 3 , OCH 3 , OC 2 H 5 , CH 2 OCH 3 , NH 2 , NHCH 3 , N(CH 3 ) 2 , CH(OCH 3 ) 2 or ##STR66## and Z is CH; provided that (1) L is fixed at the 4- or 7-position; and when L is at the 4-position, then R 5 is at the 5-position, and when L is at the 7-position, then R 5 is at the 6-position; (2) in Formulae I and II, when Q is O and L is in the 4-position, and R 5 is other than H, then R 1 and R 6 are other than H; (3) in Formula II, when Q is O and L is in the 7-position, and R 5 is other than H, then R 6 and R 6 ' are other than H; (4) in Formula II, when Q is S or SO 2 and R 5 is other than H, Br or NO 2 , then R 6 and R 6 ' are other than H; (5) in Formula I, when Q is S, then R 5 is other than SO 2 R 8 ; (6) when Q 1 is O, then Q is O and R 5 is H; and (7) the total number of carbon atoms in R 1 to R 4 are less than or equal to 4.
Claim 3
Dependent Claim
18 words
Compounds of claim 1 where X is OCH 3 and Q 1 is O or CH 2 .
Claim 4
Dependent Claim
18 words
Compounds of claim 2 where R 5 is H, Cl, CH 3 or CO 2 R 7 .
Claim 5
Dependent Claim
19 words
Compounds of claim 3 which have the structure shown in Formula I and where L is in the 7-position.
Claim 6
Dependent Claim
9 words
Compounds of claim 4 where R 5 is H.
Claim 7
Dependent Claim
8 words
Compounds of claim 5 where Q is O.
Claim 8
Dependent Claim
12 words
Compounds of claim 5 where Q is S or SO 2 .
Claim 9
Dependent Claim
35 words
Compounds of claim 6 where Y is CH 3 , OCH 3 , OC 2 H 5 or CH 2 OCH 3 and R 1 and R 2 are independently H or CH 3 .
Claim 10
Dependent Claim
35 words
Compounds of claim 7 where Y is CH 3 , OCH 3 , OC 2 H 5 or CH 2 OCH 3 and R 1 and R 2 are independently H or CH 3 .
Claim 11
Dependent Claim
9 words
The compound of claim 1, N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]sulfamic acid, 2,3-dihydro-2,2-dimethylbenzofuran-7-yl ester.
Claim 12
Dependent Claim
9 words
The compound of claim 1, N-[(4-methyl-6-methoxypyrimidin-2-yl)aminocarbonyl]sulfamic acid, 2,3-dihydro-2,2-dimethylbenzofuran-7-yl ester.
Claim 13
Dependent Claim
37 words
A composition suitable for controlling the growth of undesired vegetation which comprises an effective amount of a compound of any of claims 1 to 11 and at least one of the following: surfactant, solid or liquid diluent.
Claim 14
Independent Claim
31 words
A method for controlling the growth of undesired vegetation which comprises applying to the locus to be protected an effective amount of a compound of any of claims 1 to 11.
References Cited (Backward Citations)
US4032649A
Cited
US4191553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |