New haloalkylsulfonanilide derivative, herbicide and use method thereof

A technology of halogenated alkylsulfonanilides and alkylsulfonyl groups, which is applied in the field of novel halogenated alkylsulfonanilide derivatives or their salts, and can solve the problems of unknown preparation methods, physical and chemical properties and herbicidal activity
CN101111485AInactive Publication Date: 2008-01-23NIHON NOHYAKU CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NIHON NOHYAKU CO LTD
Publication Date
2008-01-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

Halogenated alkylsulfonanilide derivatives shown in formula (I): {wherein R1 represents haloalkyl; R2 represents H, alkylcarbonyl, optionally substituted phenylcarbonyl, alkoxycarbonyl, optionally substituted phenoxycarbonyl, Optionally substituted benzenesulfonyl and the like; R3 and R4 each represent H, alkyl, cycloalkyl, halogen, CN, etc.; R5, R6, R7 and R8 each represent H, halogen, alkyl, cycloalkyl, any Optionally substituted phenyl (C1-6 alkyl), optionally substituted heterocycle, etc.; A and W each represent O or S; and X represents 1-4 each selected from H, halogen, alkyl, alkenyl , optionally substituted phenyl, optionally substituted phenylalkylaminocarbonyl, OH, CN, etc.} and salts thereof; and herbicides containing any one of the aforementioned compounds as an active ingredient. The herbicide has excellent broad applicability, persistence and selectivity to crops, and is effective against various weeds. In particular, it can be excellently used as a herbicide for paddy fields.
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Description

technical field

[0001] The present invention relates to novel haloalkylsulfonanilide derivatives or salts thereof, herbicides containing the compounds as active ingredients, and methods of using them. Background technique

[0002] Compounds in which a haloalkylsulfonanilide and a heterocyclic ring are linked to a nitrogen atom in the heterocyclic ring via a spacer such as an alkylene group are generally known as herbicides (see, for example, JP-A-2004-107322).

[0003] However, regarding the haloalkylsulfonanilide derivatives of the present invention, their unique preparation methods, physicochemical properties and herbicidal activities have not been known so far. Contents of the invention

[0004] As mentioned above, certain haloalkylsulfonamide derivatives are known to be useful as herbicides. However, its characteristics such as effectiveness, applicability against various weeds including difficult-to-eliminate weeds, residual activity, and selectivity to crops and wee...

Claims

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