发明名称 |
Method for producing substituted nitro benzoic acids by oxidation of corresponding nitro toluenes, nitrol benzyl alcohols, esters and/or ethers |
摘要 |
The present invention relates to the preparation of nitrobenzoic acids by oxidizing particular nitrotoluenes, nitrobenzyl alcohols, esters and/or ethers in the presence of nitric acid at elevated temperature and elevated pressure. It has been found that the particular nitrotoluenes, nitrobenzyl alcohols, esters and/or ethers may be oxidized particularly reliably and in high yields using nitric acid to the benzoic acid derivatives when they are metered into the nitric acid.
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申请公布号 |
US6900349(B2) |
申请公布日期 |
2005.05.31 |
申请号 |
US20030257062 |
申请日期 |
2003.01.31 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
LANGER REINHARD;RODEFELD LARS;NEUMANN KARL HEINZ |
分类号 |
C07C201/12;C07C205/57;C07C205/58;C07C303/22;C07C309/58;(IPC1-7):C07C309/00;C07C51/16;C07C51/255;C07C51/23;C07C51/15 |
主分类号 |
C07C201/12 |
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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