发明授权
- 专利标题: Nitroanilinesulfonic acids and the preparation of phenylenediaminesulfonic acids
- 专利标题(中): 硝基苯磺酸和苯二胺磺酸的制备
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申请号: US928088申请日: 1992-08-13
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公开(公告)号: US5260431A公开(公告)日: 1993-11-09
- 发明人: Manfred Patsch , Klaus Pandl
- 申请人: Manfred Patsch , Klaus Pandl
- 申请人地址: DEX Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DEX Ludwigshafen
- 优先权: DEX3927068 19890816
- 主分类号: C07C309/46
- IPC分类号: C07C309/46 ; C07C309/29
摘要:
Nitroanilinesulfonic acids of the formula ##STR1## where R is C.sub.1 -C.sub.4 -alkyl are prepared by sulfonation of 3-nitro-N-alkylanilines using oleum, and are reduced to 3-(N-alkylamino)aniline-4-sulfonic acids.
公开/授权文献
- US5961025A Ultrasonic wave splicing device 公开/授权日:1999-10-05
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