Benzofuran-7-yl uracil derivatives and herbicides

Details Benzofuran-7-yl uracil derivatives and herbicides Benzofuran-7-yl uracil derivatives and herbicides

1998-08-05

2000-10-10

Ford, John M.

Plant protecting and regulating compositions

Plant growth regulating compositions

Organic active compound containing

544310, C07D40510, A01N 4354

Patent

active

061301876

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to novel benzofuran-7-yl uracil derivatives and herbicides containing them as active ingredients.


BACKGROUND ART

The specification of JP-A-5-262765 and the specification of JP-A-5-25165 disclose some benzofuran derivatives, the specification of JP-A-63-156787 discloses some benzopyran derivatives and benzofuran derivatives, and the specification of European Patent 626962 discloses benzothiophene derivatives and benzofuran derivatives, as they are useful as active ingredients for herbicides.
Herbicides to be used for useful crop plants, are desired to be agents which can be applied to soil or foliage and provide adequate herbicidal effects at low doses and which exhibit selectivity between crop plants and weeds. However, the herbicidal effects and the selectivity between crop plants and weeds, are influenced by the nature of soil, and phytotoxicity may sometimes be brought about to crop plants after the application, irrespective of soil treatment. From such a viewpoint, the compound disclosed in the above literatures can not necessarily be said to be satisfactory.
Under these circumstances, the present inventors have studied the herbicidal effects and the selectivity between crop plants and weeds and as a result, have found that novel benzofuran-7-yl uracil derivatives have excellent herbicidal effects and selectivity between crop plants and weeds, and have accomplished the present invention.


DISCLOSURE OF THE INVENTION

Namely, the present invention provides a benzofuran-7-yl uracil derivative represented by the general formula (1): ##STR2## [wherein X is a hydrogen atom or a halogen atom, Y is a hydrogen atom, a halogen atom, a cyano group, an alkyl group, a haloalkyl group, an alkoxy group or a haloalkoxy group, R.sup.1 is a hydrogen atom, an alkyl group, an amino group or a haloalkyl group, R.sup.2 is an alkyl group or a haloalkyl group, R.sup.3 is a hydrogen atom, a halogen atom, an alkyl group or a haloalkyl group, each of R.sup.4 and R.sup.5 which are the same or different, is a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, a haloalkyl group, an alkoxy group, a haloalkoxy group, an alkenyloxy group, an alkynyloxy group, an alkoxycarbonylalkoxy group, an alkylthio group, a haloalkylthio group, an alkenylthio group, an alkynylthio group, an alkoxycarbonylalkylthio group, an alkylsulfonyl group, a haloalkylsulfonyl group, a phenylsulfonyl group which may be substituted, a halogen atom, a hydroxyiminoalkyl group, a hydroxyiminohaloalkyl group, an alkoxyiminoalkyl group, an alkoxyiminohaloalkyl group, an alkyliminoalkyl group, a phenyliminoalkyl group which may be substituted, a hydrazonoalkyl group, an alkylhydrazonoalkyl group, a phenylhydrazonoalkyl group which may be substituted, a cyano group, a carbamoyl group (having the same or different hydrogen atoms, alkyl groups, acyl groups, haloalkylcarbonyl groups, alkylsulfonyl groups, haloalkylsulfonyl groups or phenyl groups which may be substituted, substituted on the nitrogen atom), a phenyl group which may be substituted, a benzyl group which may be substituted, a cyanoalkyl group, a carbamoylalkyl group, a thiocyanoalkyl group, a nitro group, a hydroxyamino group, an oxiranyl group which may be substituted by an alkyl group, an amino group (having the same or different hydrogen atoms, alkyl groups, haloalkyl groups, alkenyl groups, alkynyl groups, cycloalkyl groups, alkylsulfonyl groups, haloalkylsulfonyl groups, phenylsulfonyl groups which may be substituted, acyl groups, haloalkylcarbonyl groups or benzoyl groups which may be substituted, substituted on the nitrogen atom), or a group represented by the general formula: ##STR3## (wherein Z is an oxygen atom or a sulfur atom, W is a group of --SO-- or a group of --SO.sub.2 --, R.sup.6 is a hydrogen atom or an alkyl group, R.sup.7 is a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, a haloalkyl group, an alkoxyalkyl group or an alkylthioalkyl group, or R.sup.6 and R.sup.7

REFERENCES:
patent: 5521147 (1996-05-01), Theodoridis

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