Importance

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Abstract

Compounds having general formula (I): wherein: --R represents a hydrogen atom, a C.sub.1-C.sub.8 alkyl or haloalkyl group, a C.sub.2-C.sub.8 alkoxyalkyl or haloalkoxyalkyl group, a C.sub.2-C.sub.8 alkenyl or haloalkenyl group, a C.sub.2-C.sub.8 alkinyl or haloalkinyl group, a C.sub.3-C.sub.8 cycloalkyl or C.sub.4-C.sub.9 cycloalkylalkyl group optionally substituted by halogen atoms and/or C.sub.1-C.sub.4 alkyl or haloalkyl groups, a C.sub.2-C.sub.8 alkoxyl or haloalkoxyl group, an NR.sub.aR.sub.b group; R.sub.a and R.sub.b, the same or different, represent: a hydrogen atom; a C.sub.1-C.sub.8 alkyl group; a phenyl group or a benzyl group optionally substituted by halogen atoms, by CN groups, NO.sub.2 groups, C.sub.1-C.sub.4, haloalkyl, alkoxyl, haloalkoxyl groups; or R.sub.a and R.sub.b jointly represent a C.sub.2-C.sub.8 alkylene chain optionally interrupted by oxygen atoms; R.sub.n represents a hydrogen atom, or a C.sub.1-C.sub.4 alkyl or haloalkyl group; R.sub.1 represents a hydrogen atom, a halogen atom, a C.sub.1-C.sub.4 alkyl or haloalkyl group, a C.sub.1-C.sub.4 alkoxyl or haloalkoxyl group, a C.sub.1-C.sub.4 alkylthio or haloalkylthio group, a cyano group, a nitro group; R.sub.2 represents a C.sub.1-C.sub.4 alkyl, haloalkyl, alkoxyl, haloalkoxyl, alkylthio or haloalkylthio group, or a halogen atom; X and X.sub.1, the same or different, represent a hydrogen atom or a halogen atom; A represents an oxygen atom, a --CR.sub.3R.sub.4O-group, an --OCR.sub.3R.sub.4-- group wherein R.sub.3 and R.sub.4, the same or different, represent a hydrogen atom or a C.sub.1-C.sub.4 alkyl, haloalkyl group.

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First Claim