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    Process for the preparation of indigo compounds
    1.
    发明公开
    Process for the preparation of indigo compounds 失效
    Verfahren zur Herstellung von Indigoverbindungen。

    公开(公告)号：EP0339887A1

    公开(公告)日：1989-11-02

    申请号：EP89304005.5

    申请日：1989-04-21

    申请人： MITSUI TOATSU CHEMICALS, Inc.

    发明人： Yamamoto, Yoshihiro ,  Takaki, Usaji ,  Aoki, Shinobu 2-11, Mitsui Toatsu Kosugaya Apaato ,  Hara, Isao 4-18, Mitsui Toatsu Apaato

    IPC分类号： C07D209/36

    CPC分类号： C07D209/36 ,  C09B7/02

    摘要： Disclosed is a process for preparing an indigo compound in improved yield by reacting an indole compound having no substituent at the 2- and 3-positions with an organic hydroperoxide in the presence of an additive selected from the group consisting of (1) a carboxyl-containing compound and (2) a boric acid ester compound. The yield of the indigo compound can further be increased by using a metallic compound catalyst capable of oxidizing carbon atom at the 3-­position of the indole compound, such as a compound of a metal of group 4A, 5A or 6A of the periodic table.

    摘要翻译： 公开了一种制备靛蓝化合物的方法，其通过使选自以下的添加剂存在下使在2-位和3-位没有取代基的吲哚化合物与有机氢过氧化物反应来制备靛蓝化合物：（1）羧基 - （2）硼酸酯化合物。 通过使用能够在吲哚化合物的3-位氧化碳原子的金属化合物催化剂，例如周期表的4A，5A或6A族金属的化合物，可以进一步提高靛蓝化合物的产率。