发明授权
US4320060A Process for the preparation of derivatives of
3-(4-hydroxy-anilino)carbazole
失效
制备3-（4-羟基 - 苯胺基）咔唑衍生物的方法
- 专利标题： Process for the preparation of derivatives of 3-(4-hydroxy-anilino)carbazole
- 专利标题（中）： 制备3-（4-羟基 - 苯胺基）咔唑衍生物的方法
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申请号： US108486申请日： 1979-12-31
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公开(公告)号： US4320060A公开(公告)日： 1982-03-16
- 发明人: Steffen Piesch , Friedrich Engelhardt , Herbert Wille , Wolf Weidemuller , Artur Meyer
- 申请人： Steffen Piesch , Friedrich Engelhardt , Herbert Wille , Wolf Weidemuller , Artur Meyer
- 申请人地址： DEX Frankfurt
- 专利权人： Cassella Aktiengesellschaft
- 当前专利权人： Cassella Aktiengesellschaft
- 当前专利权人地址： DEX Frankfurt
- 优先权： DEX29441 19790108
- 主分类号： C07D209/88
- IPC分类号： C07D209/88 ; C09B49/00 ; C09B49/10
摘要：
The process for the preparation of a 3-(4-hydroxyanilino)carbazole of the formula ##STR1## wherein R is hydrogen, alkyl having 1 to 8 carbon atoms or halogenoalkyl having 1 to 8 carbon atoms, comprising reacting a 3-aminocarbazole of the formula ##STR2## with p-hydroquinone or p-aminophenol or a mixture of p-hydroquinone and p-aminophenol in at least stoichiometric amounts by heating to a temperature of 150.degree. to 300.degree. C. with exclusion of oxygen.
公开/授权文献
- USD426286S Shower head 公开/授权日：2000-06-06
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