Patent ID: 9611226
Date: 2017-04-04
CPC Classifications: C07D

Claim:
1. A preparation method for azoxystrobin with a structure represented by formula (1), comprising: a) allowing a chemical compound with a structure represented by formula (2) to have an etherification reaction with 2-cyanophenol and/or its salt in a butyl acetate medium, under the catalysis of an azabicyclo-tertiary amine compound and/or its salt that serves as a catalyst, to obtain a butyl acetate solution that contains azoxystrobin; b) cooling down the butyl acetate solution that contains azoxystrobin; c) precipitating, by way of the cooling down, the azoxystrobin with a structure represented by formula (1) from the butyl acetate solution, wherein, corresponding to 1 mol compound with a structure represented by formula (2) used in the etherification reaction process, the usage amount of butyl acetate is 600-2,000 ml, and the reaction temperature of the etherification reaction is 80-120° C.