| 摘要 |
The invention is concerned with novel compounds of the formula <IMAGE> I wherein R1 signifies optionally substituted phenyl or pyridyl, R2 signifies substituted phenyl, X signifies oxygen, sulfur or NR3, Y signifies oxygen or sulfur and R3 signifies methyl, halomethyl or 2-propynyl, and their manufacture, pest control compositions which contain said compounds as the active ingredient and the use of the active substances or compositions for the control of pests.
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