KR880007445A - 2-nitro-5- (substituted phenoxy) benzohydroxymate derivatives and their use as herbicides - Google Patents

Abstract

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Description

2-nitro-5- (substituted phenoxy) benzohydroxymate derivatives and their use as herbicides

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Claims (10)

The compound of the following general formula (I). Wherein R ¹ is a lower alkyl group, R ² is a hydrogen atom or a lower alkyl group, and Z is a general formula -OR ³ or -SR ⁴ , wherein R ³ is a lower alkenyl or alkynyl group as halogen, cyano or May be substituted with lower alkoxycarbonyl, R 4 is a lower alkyl group. The compound of claim 1, wherein the compound is syn-type. The compound of claim 1, wherein R ¹ is methyl and R ² is hydrogen. The compound of claim 1, wherein R ³ is allyl or propargyl and R ² is hydrogen. 2. Methyl o-allyloxycarbonylmethyl-5- (2-chloro-4-trifluoromethylphenoxy) -2-nitrobenzohydroxymate, methyl o-propargyloxycarbonyl Methyl-5- (2-chloro-4-trifluoromethylphenoxy) -2-nitrobenzohydroxymate, methyl o-methylthiogapbornylmethyl-5- (2-chloro-4-trifluoromethylphenoxy C) -2-nitrobenzohydroxymate, or methyl on-propylthiocarbonylmethyl-5- (2-chloro-4-trifluoromethylphenoxy) -2-nitrobenzohydroxymate. (a) reacting an ester forming derivative of a compound of formula (II) with a compound of formula (IV), or (b) reacting a compound of formula (II) with a compound of formula (IV) Or (c) reacting a compound of general formula (V) with a compound of general formula (VI) or diazomethane of the following general formula (I). Wherein R ¹ is a lower alkyl group, R ² is a hydrogen atom or a lower alkyl group, Z is a general formula -OR ³ or -SR ⁴ , wherein R ³ is a lower alkenyl or alkynyl group as halogen, cyano or lower May be substituted with alkoxycarbonyl, R ⁴ is a lower alkyl group, Q is an oxygen or sulfur atom, X ¹ is a halogen atom, and X ² is an acid residue. A herbicidal composition comprising a compound of formula (I) and an agronomically acceptable carrier or diluent. Wherein R ¹ is a lower alkyl group, R ² is a hydrogen atom or a lower alkyl group, Z is a general formula -OR ³ or -SR ⁴ , wherein R ³ is lower alkenyl or alkynyl as halogen, cyano or lower May be substituted with alkoxycarbonyl, and R ⁴ is a lower alkyl group. A herbicide containing the compound of the following general formula (I). Wherein R ¹ is a lower alkyl group, R ² is a hydrogen atom or a lower alkyl group, Z is a general formula -OR ³ or -SR ⁴ , wherein R ³ is lower alkenyl or alkynyl as halogen, cyano or lower May be substituted with alkoxycarbonyl, and R ⁴ is a lower alkyl group. A method of inhibiting weeds, wherein the compound of the general formula (I) is applied to an area in which weeds are to be suppressed or to weeds to be suppressed. Wherein R ¹ is a lower alkyl group, R ² is a hydrogen atom or a lower alkyl group, Z is a general formula -OR ³ or -SR ⁴ , wherein R ³ is lower alkenyl or alkynyl as halogen, cyano or lower It may be substituted with alkoxycarbonyl, and R ⁴ is a lower alkyl group. Use as a herbicide of the compound of the following general formula (I). Wherein R ¹ is a lower alkyl group, R ² is a hydrogen atom or a lower alkyl group, Z is a general formula -OR ³ or -SR ⁴ , wherein R ³ is lower alkenyl or alkynyl as halogen, cyano or lower It may be substituted with alkoxycarbonyl, and R ⁴ is a lower alkyl group. ※ Note: The disclosure is based on the initial application.