Herbicidal compound, herbicidal composition containing the same and method of use thereof
AssigneeIshihara Sangyo Kaisha, Ltd.
InventorsRyohei Takahashi, Kanichi Fujikawa, Isao Yokomichi, Yasuhiro Tsujii, Nobuyuki Sakashita
Life of this patent
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Abstract
.alpha.-[4-(5-Mono-substituted or 3,5-di-substituted-pyridyl-2-oxy)phenoxy]alkanecarboxylic acids and derivatives thereof useful as a herbicide; a herbicidal composition containing the compound; methods of controlling weeds using such materials and production of such materials.
Claims28
A compound having the general formula (I):
- ##STR44## wherein X is a halogen atom;
- Y is a hydrogen atom, a halogen atom or a methyl group;
- R is a hydrogen atom or a straight or branched chain (C.sub.1 - C.sub.6)alkyl group;
- and R.sup.1 is a hydroxy group;
- a (C.sub.1 - C.sub.9)alkoxy group in which the alkyl moiety thereof may be straight or branched chain and may be substituted with one or more of a halogen atom or a hydroxy group;
- a (C.sub.2 - C.sub.4)alkenyloxy group;
- a cyclohexyloxy group in which the cyclohexyl moiety thereof may be substituted with one or more of a halogen atom or a methyl group;
- a phenoxy group in which the aryl moiety thereof may be substituted with one or more of a halogen atom or a methyl group;
- a benzyloxy group in which the aryl moiety thereof may be substituted with one or more of a halogen atom an --OM group where M is a cation;
A herbicidal composition comprising a herbicidally effective amount of at least one compound having the general formula (I):
- ##STR45## wherein X is a halogen atom;
- Y is a hydrogen atom, a halogen atom or a methyl group;
- R is a hydrogen atom or a straight or branched chain (C.sub.1 - C.sub.6)alkyl group;
- and R.sup.1 is a hydroxy group;
- a (C.sub.1 - C.sub.9)alkoxy group in which the alkyl moiety thereof may be straight or branched chain and may be substituted with one or more of a halogen atom or a hydroxy group;
- a (C.sub.2 - C.sub.4)alkenyloxy group;
- a cyclohexyloxy group in which the cyclohexyl moiety thereof may be substituted with one or more of a halogen atom or a methyl group;
- a phenoxy group in which the aryl moiety thereof may be substituted with one or more of a halogen atom or a methyl group;
- a benzyloxy group in which the aryl moiety thereof may be substituted with one or more of a halogen atom or a methyl group;
- or an --OM group where M is a cation;
- as an active ingredient and an agriculturally acceptable adjuvant.
The method for controlling noxious weeds in the presence of cultivated crops which comprises applying a herbicidally effective amount of a herbicidal composition comprising at least one compound having the general formula (I):
- ##STR46## wherein X is a halogen atom;
- Y is a hydrogen atom, a halogen atom or a methyl group;
- R is a hydrogen atom or a straight or branched chain (C.sub.1 - C.sub.6)alkyl group;
- and R.sup.1 is a hydroxy group;
- a (C.sub.1 - C.sub.9)alkoxy group in which the alkyl moiety thereof may be straight or branched chain and may be substituted with one or more of a halogen atom or a hydroxy group;
- a C.sub.2 - C.sub.4)alkenyloxy group;
- a cyclohexyloxy group in which the cyclohexyl moiety thereof may be substituted with one or more of a halogen atom or a methyl group;
- a phenoxy group in which the aryl moiety thereof may be substituted with one or more of a halogen atom or a methyl group;
- a benzyloxy group in which the aryl moiety thereof may be substituted with one or more of a halogen atom or a methyl group;
- or an --OM group where M is a cation;
- as an active ingredient and an agriculturally acceptable adjuvant.
A method of selectively controlling gramineous weeds in the presence of broad-leafed crops which comprises applying a herbicidally effective amount of a herbicidal composition comprising at least one compound having the general formula (I):
- ##STR47## wherein X is a halogen atom;
- Y is a hydrogen atom, a halogen atom or a methyl group;
- R is a hydrogen atom or a straight or branched chain (C.sub.1 - C.sub.6)alkyl group;
- and R.sup.1 is a hydroxy group;
- a (C.sub.1 - C.sub.9)alkoxy group in which the alkyl moiety thereof may be straight or branched chain and may be substituted with one or more of a halogen atom or a hydroxy group;
- a (C.sub.2 - C.sub.4)alkenyloxy group;
- a cyclohexyloxy group in which the cyclohexyl moiety thereof may be substituted with one or more of a halogen atom or a methyl group;
- a phenoxy group in which the aryl moiety thereof may be substituted with one or more of a halogen atom or a methyl group;
- a benzyloxy group in which the aryl moiety thereof may be substituted with one or more of a halogen atom or a methyl group;
- or an --OM group where M is a cation;
- as an active ingredient and an agriculturally acceptable adjuvant.
Dependencies are inferred from the claim text.