Abstract: A preparation method for glufosinate or a salt, an enantiomer or a mixture of enantiomers in all ratios thereof, the method being especially suitable for the preparation of glufosinate, and greatly shortening steps in an existing preparation process. Especially in the preparation of L-glufosinate, the product can effectively retain the ee value of the raw materials.
Type:
Grant
Filed:
April 20, 2023
Date of Patent:
November 19, 2024
Assignee:
LIER CHEMICAL CO., LTD.
Inventors:
Yongjiang Liu, Lei Zhou, Wei Zeng, Min Xu, Ke Cheng
Abstract: The present invention relates to a method for preparing glufosinate or an analogue and an intermediate thereof. The method comprises: a) reacting a compound of formula (II), an alcohol of formula (III) and a compound of formula (V); and b) hydrolyzing the product of the reaction above to obtain glufosinate of formula (IV) or an analogue thereof.
Type:
Grant
Filed:
May 1, 2023
Date of Patent:
March 19, 2024
Assignee:
LIER CHEMICAL CO., LTD.
Inventors:
Yongjiang Liu, Min Xu, Lei Zhou, Wei Zeng, Ke Cheng
Abstract: A preparation method for glufosinate or a salt thereof, an enantiomer thereof, or mixtures of the enantiomer thereof in all ratios, comprising reacting a compound of formula (II) or a salt, an enantiomer, or mixtures of the enantiomer in all ratios with one or more compounds of formula (III) or mixtures thereof.
Type:
Grant
Filed:
January 20, 2021
Date of Patent:
June 20, 2023
Assignees:
LIER CHEMICAL CO., LTD., GUANGAN LIER CHEMICAL CO., LTD.
Inventors:
Yongjiang Liu, Lei Zhou, Wei Zeng, Min Xu, Ke Cheng, Yingsui Yin
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