发明名称 |
Process for the preparation of p-amino-phenols |
摘要 |
p-Amino-phenols are advantageously prepared by catalytic hydrogenation of the aromatic nitro compounds on which they are based in a reaction medium of aqueous sulphuric acid in the sense of a Bamberger rearrangement at elevated temperature by a procedure in which the reaction medium additionally contains a water-miscible organic solvent.
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申请公布号 |
US5545754(A) |
申请公布日期 |
1996.08.13 |
申请号 |
US19910798681 |
申请日期 |
1991.11.26 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
KLAUSENER, ALEXANDER;LANDSCHEIDT, HEINZ;BLANK, HEINZ-ULRICH |
分类号 |
C07C213/00;C07C215/76;C07C215/86;C07C217/80;C07C217/94;C07C227/04;C07C229/70;(IPC1-7):C07C209/22 |
主分类号 |
C07C213/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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