GB346938A - Manufacture of substituted phenol-carboxylic-acids - Google Patents
Manufacture of substituted phenol-carboxylic-acidsInfo
- Publication number
- GB346938A GB346938A GB806230A GB806230A GB346938A GB 346938 A GB346938 A GB 346938A GB 806230 A GB806230 A GB 806230A GB 806230 A GB806230 A GB 806230A GB 346938 A GB346938 A GB 346938A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydroxybenzene
- chlor
- methyl
- acid
- carboxylic acid
- 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
- C07C65/00—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C65/01—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups
- C07C65/03—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups monocyclic and having all hydroxy or O-metal groups bound to the ring
- C07C65/05—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups monocyclic and having all hydroxy or O-metal groups bound to the ring o-Hydroxy carboxylic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1 : 4-Dichlor-2-hydroxybenzene carboxylic acid, 1-chlor-4-methyl-2-hydroxybenzene carboxylic acid and 1-methyl-4-chlor-2-hydroxybenzene carboxylic acid are made by treating the dry alkali metal salt of the parent hydroxy-compound with carbon dioxide under pressure. In examples, 1 : 4-dichlor-2-hydroxybenzene, 1-chlor-4-methyl-2-hydroxybenzene or 1-methyl-4-chlor-2-hydroxybenzene are dissolved in caustic soda or potash and evaporated; the cold dry powder is then treated with carbon dioxide under pressure in an autoclave and the temperature is increased; after cooling the mass is dissolved in hot water and filtered, the acid precipitated by hydrochloric acid and filtered off. It can be further purified by dissolving it in sodium carbonate or acetate and reprecipitation by acid. As the resultant acids all give a violet colouration with ferric chloride they are presumed to have the carboxylic group in the 3-position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB806230A GB346938A (en) | 1930-03-12 | 1930-03-12 | Manufacture of substituted phenol-carboxylic-acids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB806230A GB346938A (en) | 1930-03-12 | 1930-03-12 | Manufacture of substituted phenol-carboxylic-acids |
Publications (1)
Publication Number | Publication Date |
---|---|
GB346938A true GB346938A (en) | 1931-04-23 |
Family
ID=9845040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB806230A Expired GB346938A (en) | 1930-03-12 | 1930-03-12 | Manufacture of substituted phenol-carboxylic-acids |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB346938A (en) |
-
1930
- 1930-03-12 GB GB806230A patent/GB346938A/en not_active Expired
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