The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 2018
Filed:
Mar. 11, 2014
Nutrichem Company Limited, Beijing, CN;
Shangyu Nutrichem Co., Ltd., Shangyu, CN;
Jianwei Chen, Beijing, CN;
Wenjun Wang, Beijing, CN;
Jianhong Chi, Beijing, CN;
Yongchang Zhao, Beijing, CN;
Xufang Deng, Beijing, CN;
Long Wang, Beijing, CN;
Wentao Jin, Beijing, CN;
Guobin Chen, Beijing, CN;
NUTRICHEM COMPANY LIMITED, Beijing, CN;
SHANGYU NUTRICHEM CO., LTD., Shangyu, CN;
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.