GB825975A - Aromatic carboxylic acids - Google Patents
Aromatic carboxylic acidsInfo
- Publication number
- GB825975A GB825975A GB1785857A GB1785857A GB825975A GB 825975 A GB825975 A GB 825975A GB 1785857 A GB1785857 A GB 1785857A GB 1785857 A GB1785857 A GB 1785857A GB 825975 A GB825975 A GB 825975A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxygen
- ketone
- compound
- carboxylic acids
- xylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
- C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Aromatic carboxylic acids are prepared by oxidizing an alkyl substituted aromatic hydrocarbon in the liquid phase in an organic acid medium by means of oxygen or an oxygen-containing gas in the conjoint presence of a metal and bromine, e.g. a metal bromide, and in the presence of a ketone or other organic compound which forms a peroxide under the conditions of the oxidation reaction. The reaction may take place using at least 5% and preferably about 20%, by weight of the aromatic compound, of a ketone or other compound such as methyl ethyl ketone, acetaldehyde, benzaldehyde or nitromethane at a temperature lower than usual, e.g. about 80 DEG C. The use of these four peroxide-forming compounds is exemplified in the oxidation of p-xylene, m-xylene and toluene in an acetic acid medium using oxygen as the oxidizing gas at 80 DEG or 100 DEG C. in the presence of cobalt, manganese or barium bromides, or a mixture of cobalt acetate and barium bromide. Specifications 807,091 and 810,020 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1785857A GB825975A (en) | 1957-06-05 | 1957-06-05 | Aromatic carboxylic acids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1785857A GB825975A (en) | 1957-06-05 | 1957-06-05 | Aromatic carboxylic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB825975A true GB825975A (en) | 1959-12-23 |
Family
ID=10102456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1785857A Expired GB825975A (en) | 1957-06-05 | 1957-06-05 | Aromatic carboxylic acids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB825975A (en) |
-
1957
- 1957-06-05 GB GB1785857A patent/GB825975A/en not_active Expired
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