Patent CS-212344-B2 (CS)
Title: Means for protection of plants against the fungous diseasesand method of making the active substances
Inventor: GUIGUES FRANCOIS
IPC: A01N43/16
Filed: 1980-03-28
Abstract: 1. Claims for the contracting states : BE, CH, DE, FR, GB, IT, LU, NL, SE A 2-phenyl-4-pyrone derivative of the formula  see diagramm : EP0017602,P16,F2  in which X1 and X2 , 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, R1 represents an alkoxy radical containing from 1 to 4 carbon atoms, an alkenyloxy radical containing from 2 to 4 carbon atoms, the propargyloxy radical, a halogenalkoxy radical containing from 1 to 4 carbon atoms, an amino radical, an alkylamino radical containing from 1 to 4 carbon atoms or a dialkylamino radical in which the alkyl parts each of which comprising from 1 to 4 carbon atoms are identical or different, R2 represents a halogen atom, an alkyl radical containing from 1 to 5 carbon atoms, an alkoxy radical containing from 1 to 4 carbon atoms, an alkenyloxy radical containing from 3 to 4 carbon atoms, an alkynyloxy radical containing from 3 to 4 carbon atoms, an alkylthio radical containing from 1 to 4 carbon atoms, a halogenoalkyl radical containing from 1 to 4 carbon atoms, a halogenalkoxy radical containing from 1 to 4 carbon atoms, a halogenalkylthio radical containing from 1 to 4 carbon atoms or a nitro, hydroxyl, cyano or benzyloxy 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 R2 can be identical or different. 1. Claims for the contracting state : AT A fungicidal composition, for protecting plants against fungal diseases, which contains, as active ingredient, at least one compound of the general formula :  see diagramm : EP0017602,P17,F2  in which X1 and X2 , 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, R1 represents an alkoxy radical containing from 1 to 4 carbon atoms, an alkenyloxy radical containing from 2 to 4 carbon atoms, the propargyloxy radical, a halogenalkoxy radical containing from 1 to 4 carbon atoms, an amino radical, an alkylamino radical containing from 1 to 4 carbon atoms or a dialkylamino radical in which the alkyl parts (C1 -C4 ) are identical or different, R2 represents a halogen atom, an alkyl radical containing from 1 to 5 carbon atoms, an alkoxy radical containing from 1 to 4 carbon atoms, an alkenyloxy radical containing from 3 to 4 carbon atoms, an alkynyloxy radical containing from 3 to 4 carbon atoms, an alkylthio radical containing from 1 to 4 carbon atoms, a halogenoalkyl radical containing from 1 to 4 carbon atoms, a halogenoalkoxy radical containing from 1 to 4 carbon atoms, a halogenalkylthio radical containing from 1 to 4 carbon atoms or a nitro, hydroxyl, cyano or benzyloxy 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 R2 can be identical or different.