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AssigneeCentral Glass Company, Limited
InventorsTetsuo Takematsu, Takashi Kume, Takeo Komata, Kiyoshi Suzuki, Yukio Ikeda, Matsue Kawamura, Kaoru Mori
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The invention provides N-acyl-N-phenylmaleamic acid derivatives represented by the general formula I!, a method of producing the same, and a herbicide containing the same as the effective components, ##STR1## wherein X and Y each individually represent hydrogen atoms or halogen atoms, R.sup.1 represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a lower alkoxyalkyl group or a lower alkoxycarbonylalkyl group, R.sup.2 represents a lower alkyl group, a halogenated lower alkyl group or a substituted or unsubstituted phenyl group, R.sup.3 represents a hydrogen atom or a lower alkyl group, and R.sup.4 represents a hydroxyl, a lower alkoxy group, a lower alkenyloxy group, a lower alkynyloxy group, a lower alkoxyalkoxy group, a benzyloxy group or a lower alkoxycarbonylalkoxy group. This herbicide which is very useful can be widely applied to upland, paddy field, orchard, turf, forest, non-crop land, etc., and is not harmful to crops.
An N-acyl-N-phenylmaleamic acid derivative represented by the general formula I!, ##STR8## wherein X and Y each individually represent hydrogen atoms or halogen atoms, R.sup.1 represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a lower alkoxyalkyl group or a lower alkoxycarbonylalkyl group, R.sup.2 represents a lower alkyl group, a halogenated lower alkyl group or a substituted or unsubstituted phenyl group, R.sup.3 represents a hydrogen atom or a lower alkyl group, and R.sup.4 represents a hydroxyl, a lower alkoxy group, a lower alkenyloxy group, a lower alkynyloxy group, a lower alkoxyalkoxy group, a benzyloxy group or a lower alkoxycarbonylalkoxy group.
A herbicide comprising, as an effective component, an N-acyl-N-phenylmateamic acid derivative which is represented by the general formula I!, ##STR9## wherein X and Y each individually represent hydrogen atoms or halogen atoms, R.sup.1 represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a lower alkoxyalkyl group or a lower alkoxycarbonylalkyl group, R.sup.2 represents a lower alkyl group, a halogenated lower alkyl group or a substituted or unsubstituted phenyl group, R.sup.3 represents a hydrogen atom or a lower alkyl group, and R.sup.4 represents a hydroxyl, a lower alkoxy group, a lower alkenyloxy group, a lower alkynyloxy group, a lower alkoxyalkoxy group, a benzyloxy group or a lower alkoxycarbonylalkoxy group.
Dependencies are inferred from the claim text.