Invention Grant
- Patent Title: Method for preparing azoxystrobin and its intermediates
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Application No.: US15875569Application Date: 2018-01-19
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Publication No.: US10253001B2Publication Date: 2019-04-09
- Inventor: Jianwei Chen , Wenjun Wang , Jianhong Chi , Yongchang Zhao , Xufang Deng , Long Wang , Wentao Jin , Guobin Chen
- Applicant: Nutrichem Company Limited , Shangyu Nutrichem CO., LTD.
- Applicant Address: CN Beijing CN Shangyu
- Assignee: Nutrichem Company Limited,Shangyu Nutrichem Co., LTD.
- Current Assignee: Nutrichem Company Limited,Shangyu Nutrichem Co., LTD.
- Current Assignee Address: CN Beijing CN Shangyu
- Agency: Viksnins Harris Padys Malen LLP
- Priority: CN201310401149 20130905
- Main IPC: C07D239/34
- IPC: C07D239/34 ; C07D239/52

Abstract:
The present invention discloses a method for preparing azoxystrobin intermediates represented by formulae (1) and (2), comprising: controlling a compound represented by formula (3) to contact with sodium methoxide and 4,6-dichloropyrimidine, to obtain a mixture of intermediates represented by formulae (1) and (2), in the existence of a catalyst, the catalyst is an azabicyclic compound or its salt. The present invention further discloses a method for preparing azoxystrobin, comprising: controlling the intermediate represented by formula (2) provided in the present invention to react with 2-cyanophenol or its salt under the catalytic action of an azabicyclic compound or its salt, to obtain an azoxystrobin compound represented by formula (4). The method provided in the present invention has advantages including high transformation ratio, high product purity, easy and convenient operation, and environmental friendliness.
Public/Granted literature
- US20180141918A1 METHOD FOR PREPARING AZOXYSTROBIN AND ITS INTERMEDIATES Public/Granted day:2018-05-24
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