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Title:
PREPARATION METHOD FOR GLUFOSINATE-AMMONIUM
Document Type and Number:
WIPO Patent Application WO/2023/001131
Kind Code:
A1
Abstract:
A preparation method for glufosinate-ammonium or a salt, an enantiomer or a mixture of enantiomers in all ratios thereof, the method being especially suitable for the preparation of glufosinate-ammonium, and greatly shortening steps in an existing preparation process. Especially in the preparation of L-glufosinate-ammonium, the product can effectively retain the ee value of the raw materials.

Inventors:
LIU YONGJIANG (CN)
ZHOU LEI (CN)
ZENG WEI (CN)
XU MIN (CN)
CHENG KE (CN)
Application Number:
PCT/CN2022/106398
Publication Date:
January 26, 2023
Filing Date:
July 19, 2022
Export Citation:
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Assignee:
LIER CHEMICAL CO LTD (CN)
International Classes:
C07F9/32; C07C271/22; C07F9/30
Domestic Patent References:
WO2020145513A12020-07-16
WO2020145514A12020-07-16
WO2020145627A12020-07-16
WO2021147894A12021-07-29
Foreign References:
GB1596884A1981-09-03
CN106083922A2016-11-09
CN109232644A2019-01-18
US5442088A1995-08-15
US5900237A1999-05-04
Other References:
MICHAEL G.HOFFMANN ,HANS-JOACHIM ZEISS: "A novel and convenient route to L-homoserine lactones and L-phosphinothricin from L-aspartic acid", TETRAHEDRON LETTERS, vol. 33, no. 19, 5 May 1992 (1992-05-05), Amsterdam , NL , pages 2669 - 2672, XP026629960, ISSN: 0040-4039, DOI: 10.1016/S0040-4039(00)79053-8
WEITZ, IRIS S ET AL., JOURNAL OF ORGANIC CHEMISTRY, vol. 62, no. 8, 1997, pages 2527 - 2534
See also references of EP 4230634A4
Attorney, Agent or Firm:
NTD UNIVATION INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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