申请人:Rhone Poulenc Agrochemie
公开号:US04297367A1
公开(公告)日:1981-10-27
The invention relates to new 2-phenyl-4-pyrone derivatives which can be used in agriculture. They correspond to the general formula: ##STR1## in which X.sub.1 and X.sub.2, which are identical or different, each represent a hydrogen or halogen atom, with the proviso that at least one of these substituents represents a halogen atom, R.sub.1 represents an alkoxy radical (C.sub.1 -C.sub.4), an alkenyloxy radical containing from 2 to 4 carbon atoms, a propargyloxy radical, a halogenoalkoxy radical (C.sub.1 -C.sub.4), an amino radical, an alkylamino radical (C.sub.1 -C.sub.4) or a dialkylamino radical in which each of the alkyl parts, which are identical or different, contains from 1 to 4 carbon atoms, R.sub.2 represents a halogen atom, an alkyl radical containing from 1 to 5 carbon atoms, an alkoxy radical (C.sub.1 -C.sub.4), an alkenyloxy radical (C.sub.3 -C.sub.4), an alkynyloxy radical (C.sub.3 -C.sub.4), an alkylthio radical (C.sub.1 -C.sub.4), a halogenoalkyl radical (C.sub.1 -C.sub.4), a halogenoalkoxy radical (C.sub.1 -C.sub.4), a halogenoalkylthio radical (C.sub.1 -C.sub.4) or the nitro, hydroxyl or cyano radical and n is an integer which can be equal to 0, 1, 2, 3, 4 or 5, it being understood that, if n is greater than or equal to 2, the substituents R.sub.2 can be identical or different. They can be used for protecting plants against fungal diseases.
本发明涉及新的2-苯基-4-吡喃酮衍生物,可用于农业。它们对应于以下通式:##STR1## 其中X.sub.1和X.sub.2,相同或不同,每个代表氢或卤素原子,但至少其中一个取代基代表卤素原子,R.sub.1代表醇基(C.sub.1-C.sub.4),含2至4个碳原子的烯氧基,丙炔氧基,卤代烷氧基(C.sub.1-C.sub.4),氨基,烷基氨基(C.sub.1-C.sub.4)或双烷基氨基基,其中每个烷基部分相同或不同,含有1至4个碳原子,R.sub.2代表卤素原子,含1至5个碳原子的烷基,醇基(C.sub.1-C.sub.4),烯氧基(C.sub.3-C.sub.4),炔氧基(C.sub.3-C.sub.4),硫代烷基(C.sub.1-C.sub.4),卤代烷基(C.sub.1-C.sub.4),卤代烷氧基(C.sub.1-C.sub.4),卤代烷基硫基(C.sub.1-C.sub.4)或硝基,羟基或氰基,n是一个整数,可以等于0,1,2,3,4或5,如果n大于或等于2,则了解到取代基R.sub.2可以相同或不同。它们可用于保护植物免受真菌病害的影响。