Patents by Inventor Wentao JIN

Wentao JIN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10253001
    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.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: April 9, 2019
    Assignees: Nutrichem Company Limited, Shangyu Nutrichem Co., LTD.
    Inventors: Jianwei Chen, Wenjun Wang, Jianhong Chi, Yongchang Zhao, Xufang Deng, Long Wang, Wentao Jin, Guobin Chen
  • Publication number: 20180141918
    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.
    Type: Application
    Filed: January 19, 2018
    Publication date: May 24, 2018
    Applicants: Nutrichem Company Limited, Shangyu Nutrichem CO., LTD.
    Inventors: Jianwei Chen, Wenjun Wang, Jianhong Chi, Yongchang Zhao, Xufang Deng, Long Wang, Wentao Jin, Guobin Chen
  • Patent number: 9920015
    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.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: March 20, 2018
    Assignees: NUTRICHEM COMPANY LIMITED, SHANGYU NUTRICHEM CO., LTD.
    Inventors: Jianwei Chen, Wenjun Wang, Jianhong Chi, Yongchang Zhao, Xufang Deng, Long Wang, Wentao Jin, Guobin Chen
  • Publication number: 20160200687
    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.
    Type: Application
    Filed: March 11, 2014
    Publication date: July 14, 2016
    Inventors: Jianwei CHEN, Wenjun WANG, Jianhong CHI, Yongchang ZHAO, Xufang DENG, Long WANG, Wentao JIN, Guobin CHEN