117 results about "Cyflumetofen" patented technology

The invention discloses a pesticide combination containing acequinocyl. The pesticide combination contains an active ingredient A and an active ingredient B, wherein the active ingredient A is selected from the acequinocyl, the active ingredient B is selected from any one of the following compounds: spirodiclofen, fluacrypyrim, fenpyroximate and cyflumetofen, and the weight ratio of the active ingredient A to the active ingredient B is 1:60-80:1. The combination can prevent and eliminate various pest mites and has an obvious synergistic effect, the dosage of pesticides can be reduced, the residual quantity of the pesticides on crops is reduced, and the environmental pollution is alleviated.

The invention discloses a synthesis method of an acaricide cyflumetofen intermediate p-tert-butyl phenylacetonitrile, and belongs to the field of pesticide preparation. The synthesis method is characterized in that a reaction is performed on 4-tert-butyl halobenzene and cyanoacetate to obtain the p-tert-butyl phenylacetonitrile. A reaction process comprises the following steps: 1), under a protective gas condition, uniformly mixing the cyanoacetate, organic alkali and a solvent A, raising the temperature to 80-105 DEG C, controlling the pressure to be 3-5 atmospheric pressures, adding a solution of the tert-butyl halobenzene and a solvent B in three batches within 20-40 min, then controlling the reaction temperature to be 95-120 DEG C, controlling the reaction pressure to be 4-7 atmospheric pressures, carrying out a reaction for 1-3 hours, then adding deionized water, controlling the reaction temperature to be 130-150 DEG C, controlling the reaction pressure to be 6-9 atmospheric pressures, and continuing the reaction for 4-6 hours; 2), removing the solvents from a system by using a rotary evaporator, then transferring a remainder to water, adding a solvent C, stirring, layering, collecting an organic phase, drying by using a drying agent, then filtering, collecting a filtrate, distilling the filtrate under reduced pressure, and collecting a fraction with the temperature of 78-79 DEG C (0.1 torr) to obtain the p-tert-butyl phenylacetonitrile. According to the synthesis method, the steps are few, the yield is relatively high and the pollutant emission is less.