| abstract |
Preparation and use of halobutenolactone compounds with insecticidal activity, the present invention relates to a nitrogen-containing ring-opening compound having formula (A), wherein R 1 , R 2 , R 3 and X are each as described in the specification the definition. The invention discloses a preparation method and use of a novel insecticide. The compound and its derivatives are effective against agricultural and forestry pests such as Homoptera and Lepidoptera: aphids, planthoppers, whiteflies, leafhoppers, thrips , cotton bollworm, cabbage caterpillar, diamondback moth, Spodoptera litura, armyworm, etc. have high insecticidal activity. |