PROCESS FOR MAKING MICROCRYSTALLINE DIMETHYL FUMARATE
    2.
    发明公开
    PROCESS FOR MAKING MICROCRYSTALLINE DIMETHYL FUMARATE 审中-公开
    制备微晶二甲基富马酸酯的方法

    公开(公告)号:EP3164378A1

    公开(公告)日:2017-05-10

    申请号:EP15731943.5

    申请日:2015-06-26

    申请人: Synthon B.V.

    发明人: VYKLICKY, Libor

    IPC分类号: C07C67/08 C07C67/52 C07C69/70

    CPC分类号: C07C67/52 C07C67/08 C07C69/60

    摘要: The invention relates to a process for making a microcrystalline dimethyl fumarate comprising a step of providing a solution of dimethyl fumarate in methanol and combining the solution with water under precipitation of microcrystalline dimethyl fumarate.

    摘要翻译: 本发明涉及一种制备微晶富马酸二甲酯的方法,该方法包括提供富马酸二甲酯在甲醇中的溶液并在微晶富马酸二甲酯沉淀下将该溶液与水混合的步骤。

    PROCESS FOR PREPARING HIGH PURITY AND CRYSTALLINE DIMETHYL FUMARATE
    4.
    发明公开
    PROCESS FOR PREPARING HIGH PURITY AND CRYSTALLINE DIMETHYL FUMARATE 有权
    VERFAHREN ZUR HERSTELLUNG VON HOCHREINEM UND KRISTALLINEM DIMETHYLFUMARAT

    公开(公告)号:EP2718257A4

    公开(公告)日:2015-08-12

    申请号:EP12796164

    申请日:2012-06-08

    申请人: BIOGEN MA INC

    IPC分类号: C07C67/08 C07C67/52 C07C69/60

    摘要: The present invention describes a process for the preparation of dimethyl fumarate. The process involves the esterification of fumaric acid and methanol in the presence of sulfuric acid as an acid catalyst. The high purity dimethyl fumarate contains no more than trace amounts of dimethyl sulfate. The present invention also provides a process for the preparation of highly pure dimethyl fumarate with a particle size from 20 to 250μπι.

    摘要翻译: 本发明描述了制备富马酸二甲酯的方法。 该方法包括在作为酸催化剂的硫酸存在下富马酸和甲醇的酯化。 高纯度富马酸二甲酯含有不超过痕量的硫酸二甲酯。 本发明还提供了制备粒径为20-250μm的高纯度富马酸二甲酯的方法。