GB329741A - Manufacture of naphthylamine-carboxylic acid derivatives - Google Patents
Manufacture of naphthylamine-carboxylic acid derivativesInfo
- Publication number
- GB329741A GB329741A GB821929A GB821929A GB329741A GB 329741 A GB329741 A GB 329741A GB 821929 A GB821929 A GB 821929A GB 821929 A GB821929 A GB 821929A GB 329741 A GB329741 A GB 329741A
- Authority
- GB
- United Kingdom
- Prior art keywords
- naphthalene
- hydroxy
- naphthylamine
- carboxylic acid
- acid derivatives
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
329,741. Imray, O. Y., (I. G. Farbenindustrie Akt.-Ges.). March 13, 1929. Naphthylamine carboxylic acid derivatives are made by treating the alkali-metal salt of a 2 (4<1> hydroxyarylamino)-naphthalene in which the aryl group has the 3'-position free and may carry one alkyl group, with carbon dioxide at a raised temperature and pressure. The starting materials may be obtained .by condensing 2-hydroxy-3- naphthoic acid with an ammophenol or ammocresol in which the hydroxyl is pto the amino group, and splitting off the 3-carboxyl group. The carboxylic acids, including the alkyl derivatives, are used as dyestuff intermediates. In examples, 2-(4<1> hydroxyphenylamino) naphthalene, 2-(4<1> hydroxy-2<1>-methylphenylamino)naphthalene, 2-(4<1> hydroxy-31 methylphenylamino) naphthalene, are treated in caustic alkali solution with carbon dioxide under pressure, to give the corresponding 3'-carboxylic acids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB821929A GB329741A (en) | 1929-03-13 | 1929-03-13 | Manufacture of naphthylamine-carboxylic acid derivatives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB821929A GB329741A (en) | 1929-03-13 | 1929-03-13 | Manufacture of naphthylamine-carboxylic acid derivatives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB329741A true GB329741A (en) | 1930-05-29 |
Family
ID=9848211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB821929A Expired GB329741A (en) | 1929-03-13 | 1929-03-13 | Manufacture of naphthylamine-carboxylic acid derivatives |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB329741A (en) |
-
1929
- 1929-03-13 GB GB821929A patent/GB329741A/en not_active Expired
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