EP0318602A1
Expired / Lapsed
EP
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Pyrazolesulfonamide derivative, process for its production and herbicide containing it
Assignee: Nissan Chemical Corp
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Filing: 1986-01-10
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Granted: —
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Expires: 2006-01-10
Abstract
Abstract A pyrazolesulfonamide derivative represented by Formula (I): wherein R represents a hydrogen atom or a methyl group; X represents a hydrogen atom or a fluorine atom. The compound is useful as a herbicide having not only excellent killing effect on weeds but also the selectivity on certain crops. Useful processes for synthesizing the compound are also disclosed.
Inventors
- 👤 Susumu Yamamoto
- 👤 Takuya Kakuta
- 👤 Toshiaki Sato
- 👤 Katsushi Morimoto
- 👤 Eiichi Oya
- 👤 Takashi Ikai
- 👤 Tsutomu Nawamaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 15:47
CPC Classifications
C; C07; C07D; C07D521/00; A; A01; A01N; A01N47/00; A01N47/08; A01N47/28; A01N47/36; A01N47/40; A01N47/42; A01N47/44
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
26 words
A pyrazolesulfonamide derivative represented by formula (I): wherein R represents a hydrogen atom or a methyl group; X represents a hydrogen atom or a fluorine atom.
Claim 2
Dependent Claim
26 words
A pyrazolesulfonamide derivative represented by formula (I): wherein R represents a hydrogen atom or a methyl group; X represents a hydrogen atom or a fluorine atom.
Claim 3
Dependent Claim
8 words
A compound of claim I, which is N-[(4,6-dimethylpyrimidin-2-yl)aminocarbonyl]-4-methoxycarbonyl-l-(2-pyridyl)pyrazole-5-sulfonamide.
Claim 4
Dependent Claim
8 words
A compound of claim I, which is N-[(4,6-dimethylpyrimidin-2-yl)aminocarbonyl]-4-methoxycarbonyl-3-methyl-I-(2-pyridyl)pyrazole-5-sulfonamide.
Claim 5
Dependent Claim
8 words
A compound of claim 1, which is N-[(4,6-dimethylpyrimidin-2-yl)aminocarbonyl]-4-methoxycarbonyl-I-(6-fluoropyridin-2-yl)pyrazole-5-sulfonamide.
Claim 6
Dependent Claim
71 words
A process for preparing a pyrazolesulfonamide derivative represented by formula (I) according to claim 1: wherein R represents a hydrogen atom or a methyl group; X represents a hydrogen atom or a fluorine atom, which comprises allowing a pyrazolesulfonyl-isocyanate derivative represented by the formula (II) wherein R and X have the meaning given in claim I, to react with the derivative represented by the following formula (III) in an inert solvent.
Claim 7
Dependent Claim
86 words
A process for preparing a pyrazolesulfonamide derivative represented by the formula (I) according to claim I: wherein R represents a hydrogen atom or a methyl group; X represents a hydrogen atom or a fluorine atom, which comprises allowing a pyrazolesulfonyl carbamate derivative represented by the formula (IV): wherein X has the meaning as given in claim I, and R 1 represents a C 1 -C 8 alkyl group or a phenyl group, to react with the derivative represented by the formula (III) in an inert solvent.
Claim 8
Dependent Claim
42 words
A herbicide comprising as an active component one or more of a pyrazolesulfonamide derivative represented by formula (I) wherein R represents a hydrogen atom or a methyl group; X represents a hydrogen atom or a fluorine atom, and an agriculturally acceptable carrier.
Claim 9
Dependent Claim
42 words
A herbicide comprising as an active component one or more of a pyrazolesulfonamide derivative represented by formula (I) wherein R represents a hydrogen atom or a methyl group; X represents a hydrogen atom or a fluorine atom, and an agriculturally acceptable carrier.
Claim 10
Dependent Claim
13 words
A herbicide of claim 7, wherein one of the active components is N-[(4,6-dimethylpyrimidin-2-yl)-aminocarbonyl]-4-methoxycarbonyl-1-(2-pyridyl)pyrazole-5-sulfonamide.
Claim 11
Dependent Claim
13 words
A herbicide of claim 7, wherein one of the active components is N-[(4,6-dimethylpyrimidin-2-yl)-aminocarbonyl]-4-methoxycarbonyl-3-methyl-1-(2-pyridyl)pyrazole-5-sulfonamide.
Claim 12
Dependent Claim
13 words
A herbicide of claim 7, wherein one of the active components is N-[(4,6-dimethylpyrimidin-2-yl)-amino-carbonyl]-4-methoxycarbonyl-I-(6-fluoropyridin-2-yl)pyrazole-5-sulfonamide.
Claim 13
Dependent Claim
31 words
li. A method for controlling the growth of undesired vegetation which comprises applying to the locus of such vegetation an agriculturally effective amount of one or more compounds of claim I.
References Cited (Backward Citations)
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