BIPHENYL COMPOUND-CONTAINING LIQUID PREPARATION AND APPLICATION THEREOF

    公开(公告)号:EP3845065A1

    公开(公告)日:2021-07-07

    申请号:EP19853373.9

    申请日:2019-06-21

    摘要: The present invention belongs to the field of acaricides, and relates to a liquid formulation of a biphenyl-containing compound and an application thereof. A liquid formulation of a biphenyl-containing compound takes compound A as an active component and comprises at least one carrier and at least one auxiliary. The weight percentage of the active component in the liquid formulation is 0.1%-99%. The liquid formulation of the present invention can control the particle size of the liquid formulation through a good auxiliary system, and has the characteristics of good dispersibility, high suspension rate, good biological activity, low dosage, low cost, resistance to rain washing, low residue and low toxicity to people and animals.

    METHOD FOR PREPARING PROPANEDINITRILE OXIME ETHER COMPOUND AND INTERMEDIATE COMPOUND

    公开(公告)号:EP3822253A1

    公开(公告)日:2021-05-19

    申请号:EP19835086.0

    申请日:2019-06-17

    摘要: Provided are a method of preparing a malononitrile oxime ether compound and an intermediate compound. The malononitrile oxime ether compound has a structure as shown in formula (VII), wherein W is selected from aryl or heteroaryl. The preparation method comprises steps: reacting a first raw material with a second raw material in the presence of a first solvent and a catalyst to obtain the intermediate compound, wherein the first raw material has a structure as shown in formula (IV), and the second raw material has a structure as shown in formula (V); and subjecting the intermediate compound as shown in formula (VI), and a dehydrant to a dehydrantion reaction in the presence of a second solvent to obtain the malononitrile oxime ether compound. In the preparation process for the intermediate, a cheaper cyanoacetamide is used as a raw material, the reaction conditions are mild. Moreover, the yield of the intermediate compound is high and the cost of the process is low. Furthermore, the required malononitrile oxime ether compound is obtained only through one-step dehydration reaction. Using the preparation method, is advantageous for improving the yield of malononitrile oxime ethers and reducing the cost of the process.