GB1071989A - Process for thermally disproportionating a carbocyclic aromatic carboxylic acid - Google Patents
Process for thermally disproportionating a carbocyclic aromatic carboxylic acidInfo
- Publication number
- GB1071989A GB1071989A GB5235665A GB5235665A GB1071989A GB 1071989 A GB1071989 A GB 1071989A GB 5235665 A GB5235665 A GB 5235665A GB 5235665 A GB5235665 A GB 5235665A GB 1071989 A GB1071989 A GB 1071989A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carboxylic acid
- aromatic carboxylic
- disproportionating
- thermally
- carbocyclic aromatic
- 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
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/416—Henkel reaction and related reactions, i.e. rearrangement of carboxylate salt groups linked to six-membered aromatic rings, in the absence or in the presence of CO or CO2, (e.g. preparation of terepholates from benzoates); no additional classification for the subsequent hydrolysis of the salt groups has to be given
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Carboxylic aromatic carboxylic acids are converted to the corresponding acids having at least one more carboxyl group attached to the nucleus, by heating an intimate mixture of alkali metal carboxylate with 0.01-50 wt. per cent free carboxylic acid in an inert atmosphere at a temperature at least 350 DEG , but below 450 DEG C. A bivalent metal catalyst is preferably used. Examples described the production of terephthalic acid; also specified are 2-methylterephthalic, 2-chloroterephthalic, 4-chloroisophthalic and naphthalene - 1,4- and -2,6 - dicarboxylic acids.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41831764A | 1964-12-14 | 1964-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1071989A true GB1071989A (en) | 1967-06-14 |
Family
ID=23657606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5235665A Expired GB1071989A (en) | 1964-12-14 | 1965-12-09 | Process for thermally disproportionating a carbocyclic aromatic carboxylic acid |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE673695A (en) |
| FR (1) | FR1457128A (en) |
| GB (1) | GB1071989A (en) |
| NL (1) | NL6514876A (en) |
-
1965
- 1965-11-16 NL NL6514876A patent/NL6514876A/xx unknown
- 1965-12-06 FR FR41080A patent/FR1457128A/en not_active Expired
- 1965-12-09 GB GB5235665A patent/GB1071989A/en not_active Expired
- 1965-12-14 BE BE673695D patent/BE673695A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE673695A (en) | 1966-06-14 |
| FR1457128A (en) | 1966-10-28 |
| NL6514876A (en) | 1966-06-15 |
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