Patents Assigned to SHANGYU NUTRICHEM CO., LTD.
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Patent number: 10253001Abstract: 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: GrantFiled: January 19, 2018Date of Patent: April 9, 2019Assignees: Nutrichem Company Limited, Shangyu Nutrichem Co., LTD.Inventors: Jianwei Chen, Wenjun Wang, Jianhong Chi, Yongchang Zhao, Xufang Deng, Long Wang, Wentao Jin, Guobin Chen
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Publication number: 20180141918Abstract: 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: ApplicationFiled: January 19, 2018Publication date: May 24, 2018Applicants: Nutrichem Company Limited, Shangyu Nutrichem CO., LTD.Inventors: Jianwei Chen, Wenjun Wang, Jianhong Chi, Yongchang Zhao, Xufang Deng, Long Wang, Wentao Jin, Guobin Chen
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Patent number: 9920015Abstract: 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: GrantFiled: March 11, 2014Date of Patent: March 20, 2018Assignees: NUTRICHEM COMPANY LIMITED, SHANGYU NUTRICHEM CO., LTD.Inventors: Jianwei Chen, Wenjun Wang, Jianhong Chi, Yongchang Zhao, Xufang Deng, Long Wang, Wentao Jin, Guobin Chen
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Patent number: 9556128Abstract: The present invention relates to a method for preparing an acrylate compound. The acrylate compound has a structure as shown in formula (I). The method includes: subjecting a compound with a structure of formula (II) or a mixture of compounds with structures of formula (I) and formula (II), and a catalyst to a contact reaction in the absence of an anhydride, and removing the resulting methanol by pressure reduced distillation during the contact reaction process. In the formulas (I) and (II), R is selected from one of: an alkoxy with a carbon number of 1-5, a substituent-containing phenoxyl with a carbon number of 6-20, a substituent-containing heteroaryloxy with a carbon number of 4-20, a substituent-containing heteroaryloxymethyl with a carbon number of 4-20, a substituent-containing phenoxymethyl with a carbon number of 5-20, and a substituent-containing alkyl with a carbon number of 2-20.Type: GrantFiled: March 20, 2014Date of Patent: January 31, 2017Assignees: NUTRICHEM COMPANY LIMITED, SHANGYU NUTRICHEM CO., LTD.Inventors: Xufang Deng, Wenjun Wang, Jianwei Chen, Yongchang Zhao, Jianhong Chi, Long Wang, Hua'nan You