GB837321A - Improvements in and relating to an oxidation process for the production of aromatic carboxylic acids - Google Patents
Improvements in and relating to an oxidation process for the production of aromatic carboxylic acidsInfo
- Publication number
- GB837321A GB837321A GB436557A GB436557A GB837321A GB 837321 A GB837321 A GB 837321A GB 436557 A GB436557 A GB 436557A GB 436557 A GB436557 A GB 436557A GB 837321 A GB837321 A GB 837321A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compound
- manganese
- partially oxidized
- oxidation
- carboxylic acids
- 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
- C07C51/34—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with ozone; by hydrolysis of ozonides
-
- 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 unsubstituted or substituted alkyl aromatic hydrocarbons or partially oxidized derivatives thereof in the liquid phase by means of molecular oxygen or ozone, employing as a catalyst a salt of cobalt and/or manganese, and employing as reaction medium a saturated aliphatic monocarboxylic acid, the process being characterized by being conducted in the presence of a compound of an alkali metal, alkaline earth metal, beryllium, magnesium, zinc or cadmium, at least some of which is present in ionic form, having a concentration of 0.00025 to 0.25 gram atom of metal per gram mol. of total organic compound, but excluding the oxidation of p-diisopropyl benzene in the presence of a catalyst comprising both a manganese compound and a barium compound. Temperatures of 50 DEG to 300 DEG C. and pressures up to 200 atmos. are mentioned. Bromine may be introduced into the reaction mixture. Preferably a mixture of cobalt and manganese catalysts, preferably bromides, is used. Partially oxidized aromatic hydrocarbons include alcohols, aldehydes and ketones. The hydrocarbons and partially oxidized derivatives may be substituted by groups resistant to oxidation such as halogen, sulphonamide, ether, acylamino, carboxyl, sulphonic acid and ester, amide, disubstituted amino, benzoyl, alkyl carboxylic ester, and haloalkyl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB436557A GB837321A (en) | 1957-02-08 | 1957-02-08 | Improvements in and relating to an oxidation process for the production of aromatic carboxylic acids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB436557A GB837321A (en) | 1957-02-08 | 1957-02-08 | Improvements in and relating to an oxidation process for the production of aromatic carboxylic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB837321A true GB837321A (en) | 1960-06-09 |
Family
ID=9775800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB436557A Expired GB837321A (en) | 1957-02-08 | 1957-02-08 | Improvements in and relating to an oxidation process for the production of aromatic carboxylic acids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB837321A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5416256A (en) * | 1993-10-08 | 1995-05-16 | Sumikin Chemical Co., Ltd. | Process for manufacturing 5-hydroxyisophthalic acid |
| EP1140765A1 (en) † | 1998-12-22 | 2001-10-10 | Samsung General Chemicals Co., Ltd. | A production method of aromatic carboxylic acids |
-
1957
- 1957-02-08 GB GB436557A patent/GB837321A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5416256A (en) * | 1993-10-08 | 1995-05-16 | Sumikin Chemical Co., Ltd. | Process for manufacturing 5-hydroxyisophthalic acid |
| EP1140765A1 (en) † | 1998-12-22 | 2001-10-10 | Samsung General Chemicals Co., Ltd. | A production method of aromatic carboxylic acids |
| EP1140765B2 (en) † | 1998-12-22 | 2008-02-20 | Samsung General Chemicals Co., Ltd. | A production method of aromatic carboxylic acids |
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