GB720384A - Process for the oxidation of xylenes - Google Patents
Process for the oxidation of xylenesInfo
- Publication number
- GB720384A GB720384A GB13536/52A GB1353652A GB720384A GB 720384 A GB720384 A GB 720384A GB 13536/52 A GB13536/52 A GB 13536/52A GB 1353652 A GB1353652 A GB 1353652A GB 720384 A GB720384 A GB 720384A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reaction mixture
- reaction
- acid
- diphenyl
- xylenes
- 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
- C07C51/27—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids
- C07C51/275—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids of hydrocarbyl 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
Toluic acid is produced by a method comprising slowly adding nitric acid of at least 30 per cent concentration to a xylene maintained at a temperature between 120 DEG C. and the boiling point of the reaction mixture and removing water by distillation from the reaction mixture. Phthalic acid may be obtained by raising the temperature of the reaction mixture to above 140 DEG C. and continuing the slow addition of the nitric acid and the removal of water by distillation from the reaction mixture. The reaction may be carried out in an inert organic medium which is liquid at the reaction temperatures. Mixtures of the isomeric xylenes may be used and the corresponding toluic acids and phthalic acids are obtained. Mixtures of xylenes derived from coal tars or petroleum may be used as starting materials. Suitable inert organic reaction media are, for example, diphenyl, diphenyl ethers, mineral oil, chlorinated diphenyl and benzoic acid. Specification 720,385 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US720384XA | 1951-05-28 | 1951-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB720384A true GB720384A (en) | 1954-12-15 |
Family
ID=22105174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13536/52A Expired GB720384A (en) | 1951-05-28 | 1952-05-28 | Process for the oxidation of xylenes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB720384A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2970169A (en) * | 1955-08-25 | 1961-01-31 | Standard Oil Co | Production of polybasic aromatic acids |
| US3271445A (en) * | 1960-01-14 | 1966-09-06 | Basf Ag | Nitric acid oxidation of benzene compounds containing oxidizable side chains |
-
1952
- 1952-05-28 GB GB13536/52A patent/GB720384A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2970169A (en) * | 1955-08-25 | 1961-01-31 | Standard Oil Co | Production of polybasic aromatic acids |
| US3271445A (en) * | 1960-01-14 | 1966-09-06 | Basf Ag | Nitric acid oxidation of benzene compounds containing oxidizable side chains |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4086284A (en) | Isomerization of endo-tetrahydrodicyclopentadiene to a missile fuel diluent | |
| GB839534A (en) | Nitration of o-toluic acid | |
| GB720384A (en) | Process for the oxidation of xylenes | |
| US2299755A (en) | Product from petroleum and process for producing same | |
| US1422564A (en) | Process of sulphonating carbon compounds | |
| GB720385A (en) | Preparation of phthalic acids | |
| GB554753A (en) | Improvements in or relating to the production of decomposition products of ricinoleic acid compounds | |
| US2078516A (en) | Process of treating acid liquors | |
| GB950520A (en) | Removal of crude maleic acid deposits | |
| DE408715C (en) | Process for the preparation of anhydrides of low molecular weight fatty acids | |
| US2776309A (en) | Foots oil oxidate composition | |
| US1725620A (en) | Esters of silicic acid | |
| Barlow | The free radical decomposition of benzoyl nitrate and its pressure dependence | |
| US1923571A (en) | Conversion of hydrocarbons of high boiling point into those of low boiling point | |
| US2458107A (en) | Process for the preparation of carbon | |
| GB841244A (en) | Oxidation of organic compounds | |
| US1784165A (en) | Method of producing borneol and limonene | |
| SU423786A1 (en) | Method of inhibiting terpolymerization of conjugated dienes | |
| GB914428A (en) | Process for the production of ª-, ª--dichloropropionic acid | |
| Baker et al. | The action of sulfur on normal-heptane and normal-butane | |
| GB1008577A (en) | Process for the production of stable alkyl sulphonic acid ester plasticisers of low inflammability | |
| GB1409834A (en) | Process for the production of normal paraffins | |
| GB1067957A (en) | Process for the production of olefins | |
| GB747417A (en) | Improvements in or relating to the production of phthalic acids | |
| GB393690A (en) | Improvements in the manufacture and production of acetaldehyde from acetylene |