Invention Grant
US07094923B2 Method for producing substituted nitro benzoic acids by oxidation of corresponding nitro toluenes, nitro benzyl alcohols, esters and/or ethers
失效
通过氧化相应的硝基甲苯，硝基苄醇，酯和/或醚来制备取代的硝基苯甲酸的方法
- Patent Title: Method for producing substituted nitro benzoic acids by oxidation of corresponding nitro toluenes, nitro benzyl alcohols, esters and/or ethers
- Patent Title (中): 通过氧化相应的硝基甲苯，硝基苄醇，酯和/或醚来制备取代的硝基苯甲酸的方法
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Application No.: US11083746Application Date: 2005-03-17
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Publication No.: US07094923B2Publication Date: 2006-08-22
- Inventor: Reinhard Langer , Lars Rodefeld , Karl Heinz Neumann
- Applicant: Reinhard Langer , Lars Rodefeld , Karl Heinz Neumann
- Applicant Address: DE Leverkusen
- Assignee: Bayer Aktiengesellschaft
- Current Assignee: Bayer Aktiengesellschaft
- Current Assignee Address: DE Leverkusen
- Agent Jennifer R. Seng
- Priority: DE10018048 20000412
- Main IPC: C07C309/00
- IPC: C07C309/00 ; C07C51/16 ; C07C51/255 ; C07C51/23 ; C07C51/15
Abstract:
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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