| 摘要 |
N-Acylated N-phenyl-aminotetrahydro-2-furanones of tthe formula <IMAGE> wherein R represents C1-C4-alkyl, C1-C4-alkoxy or halogen, R1 represents C1-C3-alkyl, C1-C4-alkoxy or halogen, R2 represents hydrogen, C1-C3-alkyl, C1-C4-alkoxy or halogen, R3 represents hydrogen or methyl, with the total number of C atoms of the substituents R, R1, R2 and R3 in the phenyl ring not exceeding the number 8, R4 represents hydrogen or methyl, while R5 represents one of the following groups: an alkylthioalkyl or alkoxyalkyl group having 2 to 5 carbon atoms or an alkoxyalkoxymethyl group having a maximum of 6 carbon atoms, a 2-furanyl or 2-tetrahydrofuranyl group optionally substituted by halogen, a 1,2,4-triazolymethyl group, a 1,2-pyrazolylmethyl group, or a group -CH2-OR6 in which R6 represents a 5- or 6-membered heterocycle having oxygen as the hetero atom are valuable fungicidal active substances. They can be used as fungicidal compositions, particularly for combating phytopathogenic fungi, e.g. against downy mildew on potatoes, tomatoes, grape vines and sugar beet and other plants. The novel compounds have a systemic action.
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