GB767651A - 4-sulphonyl derivatives of salicylic acid - Google Patents
4-sulphonyl derivatives of salicylic acidInfo
- Publication number
- GB767651A GB767651A GB8837/55A GB883755A GB767651A GB 767651 A GB767651 A GB 767651A GB 8837/55 A GB8837/55 A GB 8837/55A GB 883755 A GB883755 A GB 883755A GB 767651 A GB767651 A GB 767651A
- Authority
- GB
- United Kingdom
- Prior art keywords
- salicylic acid
- compounds
- reacting
- acid
- preparation
- 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
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/02—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof
- C07C303/04—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof by substitution of hydrogen atoms by sulfo or halosulfonyl groups
- C07C303/06—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof by substitution of hydrogen atoms by sulfo or halosulfonyl groups by reaction with sulfuric acid or sulfur trioxide
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention comprises salicylic acid 4-sulphonamide, the N : N-di-(n-propyl)-, N : N-di-(n-butyl)-, N : N-dimethyl- and N-phenyl derivatives thereof and N : N1-bis-(3-hydroxy-4-carboxyphenylsulphonyl)-m- and -p-phenylene diamines; and the preparation of these compounds, the corresponding o-phenylene diamine compound and other N : N-dialkyl salicylic acid 4-sulphonamides, wherein the alkyl groups each contain 1-8 carbon atoms, by diazotizing 4-aminosalicylic acid, reacting the diazo compound formed with a solution of hydrogen chloride and sulphur dioxide in the presence of a catalytic amount of a copper salt and then reacting the resulting salicylic acid 4-sulphochloride with ammonia or an appropriate amine. Suitable solvents are water and/or organic solvents such as glacial acetic acid, and the diazotization may be effected in the hydrogen chloride-sulphur dioxide solution. Examples describe the preparation of each of the compounds referred to specifically above. Reference is also made to acylation and esterification of the compounds of the invention.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE767651X | 1954-04-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB767651A true GB767651A (en) | 1957-02-06 |
Family
ID=6673549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8837/55A Expired GB767651A (en) | 1954-04-09 | 1955-03-25 | 4-sulphonyl derivatives of salicylic acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB767651A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2531430A1 (en) * | 1982-08-07 | 1984-02-10 | Sandoz Sa | HYDROXY-AROMATIC ACIDS, THEIR PREPARATION AND THEIR USE FOR SEALING ANODIZED ALUMINUM SURFACES |
-
1955
- 1955-03-25 GB GB8837/55A patent/GB767651A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2531430A1 (en) * | 1982-08-07 | 1984-02-10 | Sandoz Sa | HYDROXY-AROMATIC ACIDS, THEIR PREPARATION AND THEIR USE FOR SEALING ANODIZED ALUMINUM SURFACES |
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