Patent US4537623A successfully refreshed from Google Patents.
US4537623A
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Herbicidal 2-(oxa or thia heterocycle)5-amino-3-oxo-4-(substituted-phenyl)-2,3-dihydrofurans
Assignee: Chevron USA Inc
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Filing: 1984-03-29
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Granted: 1985-08-27
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Expires: 2004-03-29
Abstract
Abstract Herbicidal 2-(oxaheterocycle or thiaheterocycle)-5-amino-3-oxo-4-(substituted-phenyl)-2,3-dihydrofurans and derivatives thereof. The compounds generally exhibit both pre-emergence and post-emergence phytotoxicity and are useful as herbicides and also plant growth regulating agents at low dosages.
Inventors
- 👤 Carl E. Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:06
CPC Classifications
C; C07; C07D; C07D409/00; C07D409/02; C07D409/04; A; A01; A01N; A01N43/00; A01N43/02; A01N43/04; A01N43/06; A01N43/08; A01N43/10; A01N43/14
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
100 words
A compound having the formula: ##STR6## wherein R 1 and R 2 are independently hydrogen, lower alkyl having 1 through 4 carbon atoms or alkenyl having 3 through 6 carbon atoms; R 3 is hydrogen, lower alkyl, lower alkoxy, halo, or trifluoromethyl and can be at any available position on the phenyl ring; R 4 is lower alkyl, lower alkoxy, halo, or trifluoromethyl; Z is a saturated or unsaturated sulfur or oxygen heterocycle radical having 5 or 6 ring atoms one of which is sulfur or oxygen and the remainder of which are carbon atoms; and compatible cation salts thereof.
Claim 2
Dependent Claim
100 words
A compound having the formula: ##STR6## wherein R 1 and R 2 are independently hydrogen, lower alkyl having 1 through 4 carbon atoms or alkenyl having 3 through 6 carbon atoms; R 3 is hydrogen, lower alkyl, lower alkoxy, halo, or trifluoromethyl and can be at any available position on the phenyl ring; R 4 is lower alkyl, lower alkoxy, halo, or trifluoromethyl; Z is a saturated or unsaturated sulfur or oxygen heterocycle radical having 5 or 6 ring atoms one of which is sulfur or oxygen and the remainder of which are carbon atoms; and compatible cation salts thereof.
Claim 3
Dependent Claim
27 words
The compound of claim 1 wherein R 1 and R 2 are independently selected from the group of hydrogen, methyl or ethyl and R 3 is hydrogen.
Claim 4
Dependent Claim
23 words
The compound of claim 2 wherein one of R 1 or R 2 is hydrogen and the other is hydrogen, methyl or ethyl.
Claim 5
Dependent Claim
10 words
The compound of claim 1 wherein R 3 is hydrogen.
Claim 6
Dependent Claim
24 words
The compound of claim 1 wherein Z is a wholly unsaturated heterocycle radical or a partially unsaturated heterocycle radical having a single double bond.
Claim 7
Dependent Claim
12 words
The compound of claim 1 wherein Z is a saturated heterocycle radical.
Claim 8
Dependent Claim
50 words
The compound of claim 1 wherein Z has the formula ##STR7## wherein one of X, X 1 , and X 2 is sulfur or oxygen and the others are carbon atoms, and the dotted line indicates that the ring can be saturated, or can have 1 or 2 double bonds.
Claim 9
Dependent Claim
51 words
The compound of claim 1 wherein Z has the formula ##STR8## wherein one of X, X 1 , X 2 and X 3 is oxygen or sulfur and the others are carbon atoms and the dotted line indicates the ring can be saturated or can have 1 or 2 double bonds.
Claim 10
Dependent Claim
9 words
The compound of claim 3 wherein Z is thienyl.
Claim 11
Dependent Claim
9 words
The compound of claim 3 wherein Z is furyl.
Claim 12
Dependent Claim
11 words
The compound of claim 3 wherein Z is thiopyranyl or pyranyl.
Claim 13
Dependent Claim
39 words
The compound of claim 1 wherein said compound is selected from the group having the formula: ##STR9## wherein R 1 , R 2 , R 3 and Z are as defined in claim 1; and compatible cation salts thereof.
Claim 14
Dependent Claim
27 words
The compound of claim 12 wherein R 1 and R 2 are independently hydrogen, methyl or ethyl and R 3 is hydrogen and compatible cation salts thereof.
Claim 15
Dependent Claim
28 words
The compound of claim 13 wherein one of R 1 or R 2 is hydrogen and the other is hydrogen, methyl or ethyl and compatible cation salts thereof.
Claim 16
Dependent Claim
9 words
The compound of claim 14 wherein Z is thienyl.
Claim 17
Dependent Claim
9 words
The compound of claim 14 wherein Z is furyl.
Claim 18
Dependent Claim
11 words
The compound of claim 14 wherein Z is dihydrothienyl or dihydrofuryl.
Claim 19
Dependent Claim
11 words
The compound of claim 14 wherein Z is tetrahydrothienyl or tetrahydrofuryl.
Claim 20
Dependent Claim
9 words
The compound of claim 14 wherein Z is thiopyranyl.
Claim 21
Dependent Claim
9 words
The compound of claim 14 wherein Z is pyranyl.
Claim 22
Dependent Claim
11 words
The compound of claim 14 wherein Z is dihydropyranyl or dihydrothiopyranyl.
Claim 23
Dependent Claim
11 words
The compound of claim 14 wherein Z is tetrahydropyranyl or dihydrothiopyranyl.
Claim 24
Dependent Claim
31 words
The compound of claim 14 wherein Z is thien-2-yl and one of R 1 or R 2 is hydrogen and the other is hydrogen, methyl or ethyl; and compatible salts thereof.
Claim 25
Dependent Claim
24 words
The compound of claim 23 wherein one of R 1 or R 2 is hydrogen and the other is methyl; and compatible salts thereof.
Claim 26
Dependent Claim
24 words
The compound of claim 13 wherein one of R 1 or R 2 is hydrogen and the other is ethyl; and compatible salts thereof.
Claim 27
Dependent Claim
18 words
The compound of claim 23 wherein R 1 and R 2 are each hydrogen; and compatible salts thereof.
Claim 28
Dependent Claim
32 words
The compound of claim 14 wherein Z is thien-3-yl; R 3 is hydrogen, and one of R 1 or R 2 is hydrogen and the other is methyl; and compatible salts thereof.
Claim 29
Dependent Claim
34 words
The compound of claim 14 wherein Z is fur-2-yl or fur-3-yl; R 3 is hydrogen and one of R 1 or R 2 is hydrogen and the other is methyl; and compatible salts thereof.
Claim 30
Dependent Claim
10 words
The compound of claim 12 wherein R 3 is hydrogen.
Claim 31
Dependent Claim
23 words
A herbicidal composition comprising a herbicidally effective amount of the compound of claim 1, or mixtures of such compounds, and a compatible carrier.
Claim 32
Dependent Claim
21 words
A herbicidal composition comprising a herbicidally effective amount of the compound of claim 23, or mixtures thereof, and a compatible carrier.
Claim 33
Dependent Claim
33 words
A method for preventing or destroying plants which comprises applying a herbicidally effective amount of the compound of claim 1, or mixtures thereof, to the foliage or potential growth medium of said plants.
Claim 34
Dependent Claim
33 words
A method for preventing or destroying plants which comprises applying a herbicidally effective amount of the compound of claim 23, or mixtures thereof, to the foliage or potential growth medium of said plants.
Claim 35
Dependent Claim
26 words
A plant growth regulating composition which comprises an amount of the compound of claim 1, or mixtures thereof, effective to alter the growth pattern of plants.
Claim 36
Dependent Claim
41 words
A method for regulating the growth of plants which comprises applying to the foliage of said plants or their growth medium an amount of the compound of claim 1, or mixtures thereof, effective to alter the growth pattern of such plants.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-26 | 1989-02-25 | 1989-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-26 | 1993-02-25 | 1993-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-26 | 1997-02-25 | 1997-08-27 | $7700.00 | Window Closed / Lapsed |