| 摘要 |
Novel benzo-1,2,3-thiadiazole-7-carboxylic acid esters of formula <IMAGE> (I) in which Y is oxygen or sulfur; Q1 and Q2 independently of one another are each hydrogen or halogen; R1 and R2 independently of one another are each hydrogen or C1-C4alkyl; X1 is hydrogen, halogen, C1-C4alkyl, trifluoromethyl, C1-C3alkyl, C1-C2alkoxy halo-substituted in the alkyl moiety, nitro, cyano, dimethylamino, phenyl, phenoxy, or phenyl or phenoxy each substituted by halogen and/or by C1-C2alkyl and/or by C1-C2alkoxy; X2 is hydrogen, halogen or methyl; X3 is hydrogen or halogen; and A comprises the bridge member <IMAGE> R5 is C1-C6alkyl, C3-C6cycloalkyl, C1-C6alkoxy, phenyl, or phenyl substituted by halogen or methoxy; R6 is C1-C6alkyl or C1-C6alkoxy; <IMAGE> that together represents a saturated or unsaturated 3- to 7-membered heterocycle W3 having a maximum of 2 oxygen or sulfur atoms as additional hetero atoms. The novel active ingredients have plant-protecting properties and are suitable especially for the preventive protection of plants against attack by phytopathogenic microorganisms such as fungi, bacteria and viruses.
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