Title:
METHOD FOR PREPARING GLUFOSINATE
Document Type and Number:
WIPO Patent Application WO/2020/145627
Kind Code:
A1
Abstract:
Provided is a method for preparing glufosinate, comprising the steps of: preparing a first intermediate compound by reacting L-homoserine in the presence of a first acid catalyst; preparing a second intermediate compound by reacting the first intermediate compound with a R1-A-R1' compound in the presence of a first base catalyst; preparing a third intermediate compound by reacting the second intermediate compound with a halogenation agent and one or more compounds selected from R2-A and R2-E; preparing a fourth intermediate compound by reacting the third intermediate compound with a phosphorus-based compound in the presence of a second acid catalyst or a second base catalyst; and preparing L-glufosincate or a salt thereof by hydrolyzing the fourth intermediate compound in the presence of a third acid catalyst or the second base catalyst.
Inventors:
KANG MIN KYU (KR)
KIM IL CHUL (KR)
LEE IN SUNG (KR)
LEE CHANG SUK (KR)
KIM IL CHUL (KR)
LEE IN SUNG (KR)
LEE CHANG SUK (KR)
Application Number:
PCT/KR2020/000273
Publication Date:
July 16, 2020
Filing Date:
January 07, 2020
Export Citation:
Assignee:
CJ CHEILJEDANG CORP (KR)
International Classes:
C07F9/30; B01J27/10; B01J27/24; C07C219/06; C07C227/16; C07C229/22; C07D307/33
Domestic Patent References:
| WO2017151573A1 | 2017-09-08 |
Foreign References:
| CN106083922A | 2016-11-09 | |||
| US20080146840A1 | 2008-06-19 | |||
| KR20140116010A | 2014-10-01 | |||
| CN108516991A | 2018-09-11 |
Attorney, Agent or Firm:
Y.P.LEE, MOCK & PARTNERS (KR)
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