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. 18, 2025
Filed:
Apr. 27, 2023
Yongnong Biosciences Co., Ltd., Zhejiang, CN;
Ningxia Yongnong Biosciences Co., Ltd., YinChuan, CN;
Wenjie Tang, Zhejiang, CN;
Chengjun Wu, Zhejiang, CN;
Nan Li, Zhejiang, CN;
Jianjie Xu, Zhejiang, CN;
Xianzhong Tang, Zhejiang, CN;
Chunhui Mao, Zhejiang, CN;
YONGNONG BIOSCIENCES CO., LTD., Zhejiang, CN;
NINGXIA YONGNONG BIOSCIENCES CO., LTD., Ningxia, CN;
Abstract
Disclosed is a method of preparing glufosinate, and specifically a method of preparing glufosinate represented by formula (I) or its salt or enantiomer, or a mixture of its enantiomers in any ratio, comprising a step of hydrolyzing a compound of formula (III) to generate a compound of formula (I). Due to a distinctive reaction mechanism adopted in the method of the present disclosure, a halogenated hydrocarbon by-product in the Michaelis-Arbuzov reaction can be avoided and thus the destructive impact of the halogenated hydrocarbon by-product on ozone in the aerosphere can be prevented. Accordingly, the equipment and engineering investments required for the separation, purification, and collection of the foregoing by-product are eliminated, and the potential environmental and safety hazards brought by the foregoing by-product are also avoided.