| 发明名称 |
Nitroanilinesulfonic acids and the preparation of phenylenediaminesulfonic acids |
| 摘要 |
Nitroanilinesulfonic acids of the formula <IMAGE> where R is C1-C4-alkyl are prepared by sulfonation of 3-nitro-N-alkylanilines using oleum, and are reduced to 3-(N-alkylamino)aniline-4-sulfonic acids.
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| 申请公布号 |
US5260431(A) |
申请公布日期 |
1993.11.09 |
| 申请号 |
US19920928088 |
申请日期 |
1992.08.13 |
| 申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
PATSCH, MANFRED;PANDL, KLAUS |
| 分类号 |
C07C309/46;(IPC1-7):C07C309/29 |
主分类号 |
C07C309/46 |
| 代理机构 |
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