Process for producing geranylgeraniol
    5.
    发明公开
    Process for producing geranylgeraniol 失效
    Verfahren zur Herstellung von Geranylgeraniol

    公开(公告)号:EP0711749A1

    公开(公告)日:1996-05-15

    申请号:EP95117610.6

    申请日:1995-11-08

    申请人: KURARAY CO., LTD.

    IPC分类号: C07C67/52 C07C29/09 C07C33/02

    摘要: A process for producing geranylgeraniol is provided, which comprises the steps of subjecting a mixture of at least one ester derivative wherein one or more carbon-carbon double bonds in the molecule are in cis form represented by the general formula (1):

    wherein R represents an aromatic group which can be substituted with at least one substituent, or a higher aliphatic group having from 7 to 25 carbon atoms, and wavy lines, respectively, represent a state where each carbon-carbon double bond can be present in cis or trans form, and an ester derivative of the general formula (2):

    wherein R is as defined above, to crystallization to obtain the ester derivative of the formula (2) selectively, and hydrolyzing the thus obtained ester derivative.

    摘要翻译: 提供了一种制备香叶基香叶醇的方法,其包括使分子中一个或多个碳 - 碳双键为通式(1)表示的顺式的至少一种酯衍生物的混合物: 其中R表示可以被至少一个取代基取代的芳族基团或具有7至25个碳原子的高级脂族基团,波浪线分别表示每个碳 - 碳双键可以以顺式 或反式,和通式(2)的酯衍生物:其中R如上所定义,其结晶取代式(2)的酯衍生物,并水解所得酯衍生物。

    Process for producing canthaxanthin
    10.
    发明公开
    Process for producing canthaxanthin 有权
    Verfahren zur Herstellung von Canthaxanthin

    公开(公告)号:EP1059290A1

    公开(公告)日:2000-12-13

    申请号:EP00111060.0

    申请日:2000-06-02

    申请人: Kuraray Co., Ltd.

    IPC分类号: C07C403/24

    CPC分类号: C07C403/24

    摘要: Provided is a process for producing canthaxanthin comprising the step of oxidizing β -carotene with an alkali metal chlorate or an alkali metal bromate in water and an organic solvent immiscible with water, wherein the oxidization reaction is started by adding:

    a) an iodine halide or iodine, and
    b) a metal iodide,
    to a mixture of β-carotene, water, the organic solvent immiscible with water, and the alkali metal chlorate or the alkali metal bromate, which process can produce canthaxanthin for a short time, with efficiency and in an industrially advantageous manner.

    摘要翻译: 本发明提供了一种生产角黄素的方法,其包括用碱金属氯酸盐或碱金属溴酸盐在水中和与水不混溶的有机溶剂中将β-胡萝卜素氧化的步骤,其中通过加入以下物质开始氧化反应:a)卤化碘或 碘,和b)金属碘化物,与β-胡萝卜素,水,与水不混溶的有机溶剂和碱金属氯酸盐或碱金属溴酸盐的混合物,该方法可以在短时间内产生角黄素,其效率和 在工业上有利的方式。