发明名称 |
Process for the preparation of 4-nitrodiphenylamines |
摘要 |
The reaction of 4-nitrohalobenzenes with primary aromatic amines in the presence of potassium carbonate and copper compounds to produce 4-nitrodiphenylamine results in products with improved purity and yield if (1) carbonic acid amides or their derivatives are added, (2) 3 to 5 mol of amine are used per mole of halonitrobenzene and (3) 1.2 to 2 mol of the amine are added before the beginning of the reaction and the remainder during the reaction at such a rate that the molar excessive amine over halonitrobenzene is always from 100 to 400%.
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申请公布号 |
US4665232(A) |
申请公布日期 |
1987.05.12 |
申请号 |
US19860817502 |
申请日期 |
1986.01.09 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
PODDER, CHIRARANJAN;SCHLESMANN, HARRO |
分类号 |
C07B61/00;B01J27/00;B01J27/232;C07C67/00;C07C209/00;C07C209/10;C07C211/56;(IPC1-7):C07C85/04 |
主分类号 |
C07B61/00 |
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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