GB396100A - Process for the manufacture of 2-alkyl-aminobenzene-1-carboxylic acid-4-sulphonic acids - Google Patents
Process for the manufacture of 2-alkyl-aminobenzene-1-carboxylic acid-4-sulphonic acidsInfo
- Publication number
- GB396100A GB396100A GB286732A GB286732A GB396100A GB 396100 A GB396100 A GB 396100A GB 286732 A GB286732 A GB 286732A GB 286732 A GB286732 A GB 286732A GB 396100 A GB396100 A GB 396100A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carboxylic acid
- acid
- catalyst
- sulphonic
- chlorobenzene
- 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
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/01—Sulfonic acids
- C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C309/45—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
- C07C309/46—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton having the sulfo groups bound to carbon atoms of non-condensed six-membered aromatic rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
2-Alkylaminobenzene - 1 - carboxylic acid - 4 - sulphonic acids are manufactured by reacting an alkylamine with 2-chlorobenzene-1-carboxylic acid-4-sulphonic acid in aqueous solution at an elevated temperature (exceeding 50 DEG C.), advantageously with the addition of copper or a compound thereof as catalyst. Examples describe the reaction of (1) 2-chlorobenzene-1-carboxylic acid-4-sulphonic acid with methylamine, with or without metallic copper as catalyst, at 130 DEG C.; (2) the sodium salt of the acid with n-butylamine at 120 DEG C. in the absence of a catalyst; (3) the sodium salt of the acid with ethylamine at 110-120 DEG C. in the absence of a catalyst; the ethylamine may be replaced by n-propylamine, isobutylamine or isoamylamine. 2-Chlorobenzene-1-carboxylic acid-4-sulphonic acid is obtainable by oxidizing 2-chlorotoluene-4-sulphonic acid with potassium permanganate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB286732A GB396100A (en) | 1932-01-30 | 1932-01-30 | Process for the manufacture of 2-alkyl-aminobenzene-1-carboxylic acid-4-sulphonic acids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB286732A GB396100A (en) | 1932-01-30 | 1932-01-30 | Process for the manufacture of 2-alkyl-aminobenzene-1-carboxylic acid-4-sulphonic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB396100A true GB396100A (en) | 1933-07-31 |
Family
ID=9747469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB286732A Expired GB396100A (en) | 1932-01-30 | 1932-01-30 | Process for the manufacture of 2-alkyl-aminobenzene-1-carboxylic acid-4-sulphonic acids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB396100A (en) |
-
1932
- 1932-01-30 GB GB286732A patent/GB396100A/en not_active Expired
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