发明公开
EP0339887A1 Process for the preparation of indigo compounds
失效
Verfahren zur Herstellung von Indigoverbindungen。
- 专利标题： Process for the preparation of indigo compounds
- 专利标题（中）： Verfahren zur Herstellung von Indigoverbindungen。
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申请号： EP89304005.5申请日： 1989-04-21
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公开(公告)号： EP0339887A1公开(公告)日： 1989-11-02
- 发明人: Yamamoto, Yoshihiro , Takaki, Usaji , Aoki, Shinobu 2-11, Mitsui Toatsu Kosugaya Apaato , Hara, Isao 4-18, Mitsui Toatsu Apaato
- 申请人： MITSUI TOATSU CHEMICALS, Inc.
- 申请人地址： 2-5 Kasumigaseki 3-chome Chiyoda-Ku Tokyo 100 JP
- 专利权人： MITSUI TOATSU CHEMICALS, Inc.
- 当前专利权人： MITSUI TOATSU CHEMICALS, Inc.
- 当前专利权人地址： 2-5 Kasumigaseki 3-chome Chiyoda-Ku Tokyo 100 JP
- 代理机构： West, Alan Harry
- 优先权： JP100214/88 19880425
- 主分类号： C07D209/36
- IPC分类号： C07D209/36
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.
公开/授权文献
- EP0339887B1 Process for the preparation of indigo compounds 公开/授权日：1996-07-10
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