EP0052668A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
N-(4-pyridazinyl)-N'-phenylureas and -thioureas as well as plant growth regulators containing same
Assignee: Individual
•
Filing: 1980-11-25
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Granted: —
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Expires: 2000-11-25
Abstract
Abstract Plant growth regulators of the N-(4-pyridazinyl)urea and thiourea type are disclosed which exhibit excellent cytokinin-like activities and are useful for regulating plant growth in various manners, such as acceleration and suppression.
Inventors
- 👤 Toshihiko Prof. Dr. Okamoto
- 👤 Yo Prof. Dr. Isogai
- 👤 Koichi Prof. Dr. Shudo
- 👤 Soshiro Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 12:05
CPC Classifications
A; A01; A01N; A01N47/00; A01N47/08; A01N47/28; A01N47/36; C; C07; C07D; C07D237/00; C07D237/02; C07D237/06; C07D237/10; C07D237/20; C07D237/22
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
82 words
Compounds of formula: wherein R 1 and R 2 , which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a halogen atom, a hydroxy group, a lower alkoxy group, an aryloxy group, a halomethyl group, a cyano group, an alkylthio group, a carboxy group or an alkoxycarbonyl group; X represents an oxygen atom or a sulfur atom; and n represents 1, 2 or 3; when n represents 2 or 3, R2 each may be different.
Claim 2
Dependent Claim
82 words
Compounds of formula: wherein R 1 and R 2 , which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a halogen atom, a hydroxy group, a lower alkoxy group, an aryloxy group, a halomethyl group, a cyano group, an alkylthio group, a carboxy group or an alkoxycarbonyl group; X represents an oxygen atom or a sulfur atom; and n represents 1, 2 or 3; when n represents 2 or 3, R2 each may be different.
Claim 3
Dependent Claim
46 words
The compounds of Claim 1 wherein R1 is an atom or group selected from a hydrogen atom, a chlorine atom and a methoxy group; R 2 is an atom selected from a hydrogen, chlorine and fluorine atom; n is 1; and X is an oxygen atom.
Claim 4
Dependent Claim
1 words
N-(4-Pyridazinyl)-N'-phenylurea.
Claim 5
Dependent Claim
1 words
N-(4-Pyridazinyl)-N'-phenylurea.
Claim 6
Dependent Claim
1 words
N-(4-Pyridazinyl)-N'-(m-fluorophenyl)urea.
Claim 7
Dependent Claim
1 words
N-(4-Pyridazinyl)-N'-(m-fluorophenyl)urea.
Claim 8
Dependent Claim
100 words
An agricultural composition useful as a plant growth regulator comprising as an active ingredient a compount of formula: wherein R 1 and R 2 , which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a halogen atom, a hydroxy group, a lower alkoxy group, an aryloxy group, a halomethyl group, a cyano group, an alkylthio group, a carboxy group or an alkoxy- carbonyl group; X represents an oxygen atom or a sulfur atom; and n represents 1, 2 or 3; and when n is '2 or 3, R 2 each may be different.
Claim 9
Dependent Claim
100 words
An agricultural composition useful as a plant growth regulator comprising as an active ingredient a compount of formula: wherein R 1 and R 2 , which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a halogen atom, a hydroxy group, a lower alkoxy group, an aryloxy group, a halomethyl group, a cyano group, an alkylthio group, a carboxy group or an alkoxy- carbonyl group; X represents an oxygen atom or a sulfur atom; and n represents 1, 2 or 3; and when n is '2 or 3, R 2 each may be different.
Claim 10
Dependent Claim
22 words
The agricultural composition of Claim 5 wherein said active ingredient is contained in a concentration of about 0.000001 ppm to about 1%.
Claim 11
Dependent Claim
17 words
The agricultural composition of Claim 5 wherein said active ingredient is selected from N-(4-pyridazinyl)-N'-phenyl- urea and N-(4-pyridazinyl)-N'-(m-fluorophenyl)urea.
Claim 12
Independent Claim
96 words
A method of controlling plant growth which comprises contacting a plant or a part thereof with a compound of formula: wherein R 1 and R 2 , which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a halogen atom, a hydroxy group, a lower alkoxy group, a halomethyl group, a cyano group, an alkylthio group, a carboxy group or an alkoxy-carbonyl group; X represents an oxygen atom or a sulfur atom; and n represents 1, 2 or 3; when n is 2 or 3, R2 each may be different.
Claim 13
Independent Claim
96 words
A method of controlling plant growth which comprises contacting a plant or a part thereof with a compound of formula: wherein R 1 and R 2 , which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a halogen atom, a hydroxy group, a lower alkoxy group, a halomethyl group, a cyano group, an alkylthio group, a carboxy group or an alkoxy-carbonyl group; X represents an oxygen atom or a sulfur atom; and n represents 1, 2 or 3; when n is 2 or 3, R2 each may be different.
References Cited (Backward Citations)
NL276001A
Cited
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