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    METHODS FOR THE PURIFICATION OF L-GLUFOSINATE
    1.
    发明公开
    METHODS FOR THE PURIFICATION OF L-GLUFOSINATE 审中-公开

    公开(公告)号：US20240247013A1

    公开(公告)日：2024-07-25

    申请号：US18628116

    申请日：2024-04-05

    申请人： BASF SE

    发明人： Stephen Craig Fields ,  Matthew Richard Oberholzer ,  Brian Michael Green ,  Samir Kulkarni ,  Jennifer Nelson ,  Patricia Andres

    IPC分类号： C07F9/535 ,  C07F9/30

    CPC分类号： C07F9/535 ,  C07F9/301

    摘要： Compositions and methods for isolating L-glufosinate from a composition comprising L-glufosinate and glutamate are provided. The method comprises converting the glutamate to pyroglutamate followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The composition comprising L-glufosinate and glutamate is subjected to an elevated temperature for a sufficient time to allow for the conversion of glutamate to pyroglutamate, followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The glutamate alternatively may be converted to pyroglutamate by enzymatic conversion. The purified L-glufosinate is present in a final composition at a concentration of 90% or greater of the sum of L-glufosinate, glutamate, and pyroglutamate. In some embodiments, a portion of the glutamate in the starting composition may be separated from the L-glufosinate using a crystallization step. Solid forms of L-glufosinate materials, including crystalline L-glufosinate ammonium, are also described.

    METHODS FOR THE PURIFICATION OF L-GLUFOSINATE
    7.
    发明公开
    METHODS FOR THE PURIFICATION OF L-GLUFOSINATE 审中-公开

    公开(公告)号：US20230219984A1

    公开(公告)日：2023-07-13

    申请号：US18180681

    申请日：2023-03-08

    申请人： BASF SE

    发明人： Stephen Craig Fields ,  Matthew Richard Oberholzer ,  Brian Michael Green ,  Samir Kulkarni ,  Jennifer Nelson ,  Patricia Andres

    IPC分类号： C07F9/535 ,  C07F9/30

    CPC分类号： C07F9/535 ,  C07F9/301

    摘要： Compositions and methods for isolating L-glufosinate from a composition comprising L-glufosinate and glutamate are provided. The method comprises converting the glutamate to pyroglutamate followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The composition comprising L-glufosinate and glutamate is subjected to an elevated temperature for a sufficient time to allow for the conversion of glutamate to pyroglutamate, followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The glutamate alternatively may be converted to pyroglutamate by enzymatic conversion. The purified L-glufosinate is present in a final composition at a concentration of 90% or greater of the sum of L-glufosinate, glutamate, and pyroglutamate. In some embodiments, a portion of the glutamate in the starting composition may be separated from the L-glufosinate using a crystallization step. Solid forms of L-glufosinate materials, including crystalline L-glufosinate ammonium, are also described.