| 摘要 |
Compounds of the formula WHEREIN R1 and R2 are independently alkyl of 1 to 8 carbon atoms, or alkenyl of 2 to 8 carbon atoms, R3 is hydrogen or alkyl of 1 to 4 carbon atoms, and R4 is hydrogen, alkyl of 1 to 4 carbon atoms, alkenyl of 2 to 4 carbon atoms, acryl of 6 to 15 carbon atoms optionally substituted with halogen atoms or alkyl groups of 1 to 4 carbon atoms or an acyl group of 2 to 4 carbon atoms, with the proviso that R3 and R4 may be joined to form an alkylene radical of 2 to 5 carbon atoms. The compounds possess insecticidal and herbicidal activity.
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