GB1238224A - - Google Patents
Info
- Publication number
- GB1238224A GB1238224A GB1238224DA GB1238224A GB 1238224 A GB1238224 A GB 1238224A GB 1238224D A GB1238224D A GB 1238224DA GB 1238224 A GB1238224 A GB 1238224A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nuclear
- metal
- dec
- monocarboxylic acid
- source
- 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
Abstract
1,238,224. Nuclear brominated benzene carboxylic acids. STANDARD OIL CO. 2 Dec., 1968 [4 Dec., 1967], No. 57085/68. Heading C2C. A process for producing a nuclear brominated benzene carboxylic acid comprises oxidizing a benzene having at least one nuclear bromine substituent and at least one nuclear methyl substituent with a source of molecular oxygen under liquid phase conditions in the presence of a monocarboxylic acid, preferably having two to eight carbon atoms, and in the presence of at least one metal which is a transition metal or has an atomic weight of from 50-200 and is capable of existing in two or more valence states or compound or complex thereof capable of providing ions of the metal in said monocarboxylic acid as the sole source of catalysis and preferably at a temperature upward from 50‹ C. Preferred catalysts are cobalt, manganese, cerium and mixtures thereof.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US68749067A | 1967-12-04 | 1967-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1238224A true GB1238224A (en) | 1971-07-07 |
Family
ID=24760631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1238224D Expired GB1238224A (en) | 1967-12-04 | 1968-12-02 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS509787B1 (en) |
| BE (1) | BE724926A (en) |
| DE (1) | DE1812703A1 (en) |
| FR (1) | FR1596798A (en) |
| GB (1) | GB1238224A (en) |
| NL (1) | NL166917C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7335791B1 (en) | 2006-11-28 | 2008-02-26 | E.I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| US7339076B1 (en) | 2006-11-28 | 2008-03-04 | E.I. Du Pont De Nemours And Company | Process for the synthesis of 2,5-dihydroxyterephthalic acid |
| US7345194B1 (en) | 2006-11-28 | 2008-03-18 | E.I. Du Pont De Nemours And Company | Process for the synthesis of 2,5-dihydroxyterephthalic acid |
| US7345195B1 (en) | 2006-11-28 | 2008-03-18 | E.I. Du Pont De Nemours And Company | Process for the synthesis of 2,5-dihydroxyterephthalic acid |
| US7351856B1 (en) | 2006-11-28 | 2008-04-01 | E.I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| US7355070B1 (en) | 2006-11-28 | 2008-04-08 | E. I. Du Pont De Nemours And Company | Process for the synthesis of 2,5-dihydroxyterephthalic acid |
| US7358391B1 (en) | 2006-11-28 | 2008-04-15 | E.I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| US7378547B1 (en) | 2006-11-28 | 2008-05-27 | E.I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| WO2008082501A1 (en) * | 2006-12-21 | 2008-07-10 | E.I. Du Pont De Nemours And Company | Process for the synthesis of halogenated aromatic diacids |
| CN105646176A (en) * | 2016-01-05 | 2016-06-08 | 郑州轻工业学院 | Preparation method of 4,5-dibromophthalic acid |
-
1968
- 1968-12-02 GB GB1238224D patent/GB1238224A/en not_active Expired
- 1968-12-03 JP JP8813468A patent/JPS509787B1/ja active Pending
- 1968-12-03 NL NL6817303A patent/NL166917C/en not_active IP Right Cessation
- 1968-12-04 BE BE724926D patent/BE724926A/en not_active IP Right Cessation
- 1968-12-04 DE DE19681812703 patent/DE1812703A1/en active Pending
- 1968-12-04 FR FR1596798D patent/FR1596798A/fr not_active Expired
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7585999B2 (en) | 2006-11-28 | 2009-09-08 | E. I. Du Pont De Nemours And Company | Process for the synthesis of 2, 5-dihydroxyterephthalic acid |
| US7345194B1 (en) | 2006-11-28 | 2008-03-18 | E.I. Du Pont De Nemours And Company | Process for the synthesis of 2,5-dihydroxyterephthalic acid |
| US7538244B2 (en) | 2006-11-28 | 2009-05-26 | E. I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| US7553990B2 (en) | 2006-11-28 | 2009-06-30 | E.I. Du Pont De Nemours And Company | Process for the synthesis of 2, 5-dihydroxyterephthalic acid |
| US7351856B1 (en) | 2006-11-28 | 2008-04-01 | E.I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| US7355070B1 (en) | 2006-11-28 | 2008-04-08 | E. I. Du Pont De Nemours And Company | Process for the synthesis of 2,5-dihydroxyterephthalic acid |
| US7358391B1 (en) | 2006-11-28 | 2008-04-15 | E.I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| US7378547B1 (en) | 2006-11-28 | 2008-05-27 | E.I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| US7629489B2 (en) | 2006-11-28 | 2009-12-08 | E.I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| US7339076B1 (en) | 2006-11-28 | 2008-03-04 | E.I. Du Pont De Nemours And Company | Process for the synthesis of 2,5-dihydroxyterephthalic acid |
| US7345195B1 (en) | 2006-11-28 | 2008-03-18 | E.I. Du Pont De Nemours And Company | Process for the synthesis of 2,5-dihydroxyterephthalic acid |
| US7576237B2 (en) | 2006-11-28 | 2009-08-18 | E.I. Du Pont De Nemours And Company | Process for the synthesis of 2,5-Dihydroxyterephthalic acid |
| US7335791B1 (en) | 2006-11-28 | 2008-02-26 | E.I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| US7592481B2 (en) | 2006-11-28 | 2009-09-22 | E.I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| US7626053B2 (en) | 2006-11-28 | 2009-12-01 | E.I. Du Pont De Nemours And Company | Process for the synthesis of hydroxy aromatic acids |
| WO2008082501A1 (en) * | 2006-12-21 | 2008-07-10 | E.I. Du Pont De Nemours And Company | Process for the synthesis of halogenated aromatic diacids |
| CN105646176B (en) * | 2016-01-05 | 2017-11-24 | 郑州轻工业学院 | The preparation method of 4,5 dibromo phthalic acids |
| CN105646176A (en) * | 2016-01-05 | 2016-06-08 | 郑州轻工业学院 | Preparation method of 4,5-dibromophthalic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| NL166917B (en) | 1981-05-15 |
| NL166917C (en) | 1981-10-15 |
| JPS509787B1 (en) | 1975-04-16 |
| DE1812703A1 (en) | 1969-08-28 |
| FR1596798A (en) | 1970-06-22 |
| NL6817303A (en) | 1969-06-06 |
| BE724926A (en) | 1969-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |