发明名称 |
Process for the preparation of nitro diphenyl amine derivatives |
摘要 |
A process for the preparation of nitro-diphenyl amines is disclosed by decarboxylation of a urethane in the presence of a base at an elevated temperature using tetramethylene sulphone as reaction medium is disclosed. The urethane can be one formed by the reaction of a nitrophenol with an aromatic isocyanate.
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申请公布号 |
US4238407(A) |
申请公布日期 |
1980.12.09 |
申请号 |
US19790095711 |
申请日期 |
1979.11.19 |
申请人 |
BAYER AG |
发明人 |
FAUSS, RUDOLF;MAZANEK, JAN;WAGNER, KUNO |
分类号 |
C07C211/56;C07C67/00;C07C209/00;C07C209/62;(IPC1-7):C07C87/60;C07C121/78 |
主分类号 |
C07C211/56 |
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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