LA P/922 A 20260327 20060101
C
07 F 9 30 A 20060101
C
07 F 9 48 A 20060101
C
07 F 9 6584 A LA P/922 20230918 Ningxia YongNong BioScience CO., LTD
South Side of Guangfu Rd and North Side of Taizhongyin Railway Rd, Ningdong Base Chemical New Material Park, YinChuan City, Ningxia, CHINA (Postal Code: 750411) CN
CN YongNong BioSciences CO., LTD.
No. 3 East Weiqi Rd(East), Hangzhou Gulf Economy and Technology Development Zone,ShangYu, Zhejiang,CHINA. (Postal CodeG 312369) CN
CN LI, Nan
No. 3 East Weiqi Rd (East), Hangzhou Gulf Economy and Technology Development Zone, ShangYu, Zhejiang, CHINA. (Postal Code: 312369) CN
MAO, Chunhui
No. 3 East Weiqi Rd (East), Hangzhou Gulf Economy and Technology Development Zone, ShangYu, Zhejiang, CHINA. (Postal Code: 312369) CN
TANG, Wenjie
No. 3 East Weiqi Rd (East), Hangzhou Gulf Economy and Technology Development Zone, ShangYu, Zhejiang, CHINA. (Postal Code: 312369) CN
TANG, Xianzhong
No. 3 East Weiqi Rd (East), Hangzhou Gulf Economy and Technology Development Zone, ShangYu, Zhejiang, CHINA. (Postal Code: 312369) CN
WU, Chengiun
No. 3 East Weiqi Rd (East), Hangzhou Gulf Economy and Technology Development Zone, ShangYu, Zhejiang, CHINA. (Postal Code: 312369) CN
XU, Jianjie
No. 3 East Weiqi Rd (East), Hangzhou Gulf Economy and Technology Development Zone, ShangYu, Zhejiang, CHINA. (Postal Code: 312369) CN
CONCETTI-LAO CO., LTD
Lao-Thai Friendship Road, Sokpaluang Village,Sisattanak District, Vientiane Lao PDR, Tel: 312 383 LA
METHODS OF PREPARING GLUFOSINATE METHODS OF PREPARING GLUFOSINATE 20230918 20260327 Patent - Foreign

<p>Disclosed is a method of preparing glufosinate, and specifically a method of preparing glufosinate represented by formula (l) or its salt or enantiomer, or a mixture of its enantiomers in any ratio, comprising a step of hydrolyzing a compound of tbrmula (lll) to generate a compound of formula (l). 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&nbsp;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,&nbsp;and the potential environmental and safety hazards brought by the foregoing by-product are also avoided.</p>

<p>Disclosed is a method of preparing glufosinate, and specifically a method of preparing glufosinate represented by formula (l) or its salt or enantiomer, or a mixture of its enantiomers in any ratio, comprising a step of hydrolyzing a compound of tbrmula (lll) to generate a compound of formula (l). 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&nbsp;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,&nbsp;and the potential environmental and safety hazards brought by the foregoing by-product are also avoided.</p>