US4029492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel 1,2-dialkylpyrazolium compounds having 3-(or 3,5-) nitrogen-containing heterocyclic group as herbicides
Assignee: Wyeth Holdings LLC
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Filing: 1975-05-05
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Granted: 1977-06-14
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Expires: 1995-05-05
Abstract
Abstract There are provided 1,2-dialkylpyrazolium compounds having positioned thereon a 3- or 5-substituted nitrogen-containing heterocyclic group or 3,5-disubstituted nitrogen-containing heterocyclic groups as well as a method for preparing the same. There is also provided a method for the control of undesirable plant species with the above-identified compounds.
Inventors
- 👤 Barrington Cross
- 👤 Bryant Leonidas Walworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:08
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/16; C07D231/18; C07D231/20; C07D231/38; C07D403/00; C07D403/02; C07D403/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
178 words
A method for the postemergence control of undesirable plant species comprising the step of: applying to the foliage of said undesirable plant species a herbicidally effective amount of a compound having a formula selected from the group consisting of: ##STR76## wherein R 1 and R 2 each represents alkyl C 1 -C 4 ; R 3 represents a member selected from the group consisting of hydrogen, alkyl (C 1 -C 3 ), alkoxy (C 1 -C 3 ), phenyl, benzyl, cyano, carboxamido and carboxy; R 4 represents a member selected from the group consisting of hydrogen, alkoxy (C 1 -C 4 ) and halogen; R 5 represents a member selected from the group consisting of ##STR77## cyclohexyl and ##STR78## Y and Z each independently represents a member selected from the group consisting of hydrogen, halogen, methyl and alkoxy (C 1 -C 4 ); X represents a non-phytotoxic anion with a charge of 1 to 3; n represents an integer from 4 to 6; and m represents an integer from 1 to 3; and HB is an inorganic acid.
Claim 2
Independent Claim
178 words
A method for the postemergence control of undesirable plant species comprising the step of: applying to the foliage of said undesirable plant species a herbicidally effective amount of a compound having a formula selected from the group consisting of: ##STR76## wherein R 1 and R 2 each represents alkyl C 1 -C 4 ; R 3 represents a member selected from the group consisting of hydrogen, alkyl (C 1 -C 3 ), alkoxy (C 1 -C 3 ), phenyl, benzyl, cyano, carboxamido and carboxy; R 4 represents a member selected from the group consisting of hydrogen, alkoxy (C 1 -C 4 ) and halogen; R 5 represents a member selected from the group consisting of ##STR77## cyclohexyl and ##STR78## Y and Z each independently represents a member selected from the group consisting of hydrogen, halogen, methyl and alkoxy (C 1 -C 4 ); X represents a non-phytotoxic anion with a charge of 1 to 3; n represents an integer from 4 to 6; and m represents an integer from 1 to 3; and HB is an inorganic acid.
Claim 3
Dependent Claim
27 words
The method according to claim 1 wherein the compound is applied at a rate of between 0.28 kg/ha and 11.2 kg/ha to the foliage of said plants.
Claim 4
Dependent Claim
13 words
The method according to claim 1 wherein the compound is: 1,2-dimethyl-3-phenyl-5-piperidinopyrazolium iodide, hydroiodide.
Claim 5
Dependent Claim
13 words
The method according to claim 1 wherein the compound is: 1,2-dimethyl-3-phenyl-5-piperidinopyrazolium perchlorate, hydroperchlorate.
Claim 6
Dependent Claim
13 words
The method according to claim 1 wherein the compound is: 1,2-dimethyl-3-phenyl-5-(1-pyrrolidinyl)pyrazolium methyl sulfate.
Claim 7
Dependent Claim
12 words
The method according to claim 2 wherein the compound is: 3-(hexahydro-1H-azepin-1-yl)-1,2-dimethyl-5-phenylpyrazolium iodide.
Claim 8
Dependent Claim
12 words
The method according to claim 2 wherein the compound is: 1,2-dimethyl-3-(4-methylpiperidino)-5-phenylpyrazolium iodide.
Claim 9
Dependent Claim
12 words
The method according to claim 2 wherein the compound is: 1,2-dimethyl-3-(2-methylpiperidino)-5-phenylpyrazolium iodide.
Claim 10
Dependent Claim
13 words
The method according to claim 2 wherein the compound is: 4-bromo-1,2-dimethyl-3,5-dipiperidinopyrazolium bromide, hydrobromide.
Claim 11
Dependent Claim
13 words
The method according to claim 2 wherein the compound is: 1,2-dimethyl-3-(3-methylpiperidino)-5-phenylpyrazolium methyl sulfate.
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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |