Method For The Production Of Menthol
    2.
    发明申请
    Method For The Production Of Menthol 有权
    薄荷醇的生产方法

    公开(公告)号:US20080139852A1

    公开(公告)日:2008-06-12

    申请号:US11720279

    申请日:2005-11-24

    IPC分类号: C07C29/17

    摘要: Processes comprising: (a) enantioselectively hydrogenating a starting material comprising a component selected from geraniol, nerol and mixtures thereof to form optically active citronellol; (b) converting the optically active citronellol to optically active citronellal; (c) cyclizing the optically active citronellal to form a mixture comprising optically active isopulegol; and (d) subjecting the mixture to further processing comprising: (i) separating the optically active isopulegol from the mixture and hydrogenating the separated optically active isopulegol to form optically active menthol; or (ii) hydrogenating the optically active isopulegol in the mixture to form optically active menthol and separating the optically active menthol from the mixture.

    摘要翻译: 方法包括:(a)对对选择性氢化包含选自香叶醇,橙花醇及其混合物的组分的起始材料以形成光学活性香茅醇; (b)将光学活性香茅醇转化为光学活性香茅醛; (c)使光学活性香茅醛环化以形成包含光学活性异ule ol醇的混合物; 和(d)对所述混合物进行进一步处理,包括:(i)从混合物中分离光学活性异胡胶,并将分离的光学活性异胡醇氢化以形成光学活性薄荷醇; 或者(ⅱ)将混合物中的光学活性异ule)醇氢化以形成光学活性薄荷醇,并将该光学活性薄荷醇与该混合物分离。