发明授权
- 专利标题: Process for preparing 4-chloro-2,5-dimethoxy aniline
- 专利标题(中): 制备4-氯-2,5-二甲氧基苯胺的方法
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申请号: US634634申请日: 1975-11-24
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公开(公告)号: US4082803A公开(公告)日: 1978-04-04
- 发明人: Emmerich Paszthory , Bernhard Mees , Ernst Hille
- 申请人: Emmerich Paszthory , Bernhard Mees , Ernst Hille
- 申请人地址: DT Frankfurt am Main
- 专利权人: Hoechst Aktiengesellschaft
- 当前专利权人: Hoechst Aktiengesellschaft
- 当前专利权人地址: DT Frankfurt am Main
- 优先权: DT2455704 19741125
- 主分类号: C07B61/00
- IPC分类号: C07B61/00 ; C07C20060101 ; C07C67/00 ; C07C213/00 ; C07C213/02 ; C07C217/84 ; C07C93/14
摘要:
The catalytic hydrogenation of 4-chloro-2,5-dimethoxy nitrobenzene can be performed in water with a nickel catalyst if the average particle size is below 0.1 mm. The resulting aniline is reacted with diketene and the so-obtained N-acetoacetyl derivative is an azoic coupling component.
公开/授权文献
- US5713859A Implantable vascular device 公开/授权日:1998-02-03
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