CH148349A - Process for the preparation of an m-oxy-phenylarylamine carboxylic acid. - Google Patents
Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.Info
- Publication number
- CH148349A CH148349A CH148349DA CH148349A CH 148349 A CH148349 A CH 148349A CH 148349D A CH148349D A CH 148349DA CH 148349 A CH148349 A CH 148349A
- Authority
- CH
- Switzerland
- Prior art keywords
- oxy
- acid
- preparation
- carboxylic acid
- phenylarylamine
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung einer m-0$y-pheuylarylaminearbonsäure. Vorliegendes Patent bezieht sich auf ein Verfahren zur Herstellung einer rn-Oxy-phenyl- ar-ylarninoarbonsäure, dadurch gekennzeichnet, dah man ein Alkalisalz von 3-Oxy-2'-chlor- diphenylamin mit Kohlensäure unter Druck erhitzt.
Die 3-Oxy-2'-chlordiphenylarninearbonsäure ist ein weisses Pulver, das nach dem Um kristallisieren aus Eisessig den Schmelzpunkt 1980 C zeigt. Ihre alkoholische Lösung gibt mit verdünnter Eisenchloridlösung eine inten sive violette Färbung. Das Produkt soll als Zwischenprodukt zur Herstellung von Farb stoffen verwendet werden.
<I>Beispiel:</I> 895,3 Teile 3-Oxy-2'-chlordiphenylamin werden mit 300,6 Teilen Ätzkali 83,8 % ig und 1.000 Teilen Wasser in einem mit Rühr werk versehenen Autokl.aven in Lösung ge bracht und das Wasser im Vakuum bis zur völligen Trockenheit des gebildeten Kalium salzes abdestilliert. Nach dem Erkalten der Reaktionsmasse leitet man Kohlensäure bis zu einem Druck von 10 Atrn. ein und erhitzt.
auf 1700 C während 16 Stunden. Die erkal tete Schmelze wird in heiUm Wasser gelöst. filtriert und die gebildete Carbonsäure mit Salzsäure gefällt. Zur weiteren Reinigung kann dieselbe aus Soda oder Natriumacetat umgelöst werden.
Process for the preparation of a m-0 $ y-pheuylarylaminearboxylic acid. The present patent relates to a process for the preparation of a rn-oxy-phenyl-ar-ylarninoarboxylic acid, characterized in that an alkali metal salt of 3-oxy-2'-chlorodiphenylamine is heated with carbonic acid under pressure.
The 3-oxy-2'-chlorodiphenylarninearboxylic acid is a white powder which, after crystallizing from glacial acetic acid, has a melting point of 1980 ° C. Your alcoholic solution gives an intense violet color with a dilute ferric chloride solution. The product is intended to be used as an intermediate in the manufacture of dyes.
<I> Example: </I> 895.3 parts of 3-oxy-2'-chlorodiphenylamine are dissolved with 300.6 parts of 83.8% caustic potash and 1,000 parts of water in an autoclave equipped with a stirrer and the water is distilled off in vacuo until the potassium salt formed is completely dry. After the reaction mass has cooled down, carbonic acid is passed up to a pressure of 10 Atrn. one and heated.
at 1700 C for 16 hours. The cooled melt is dissolved in hot water. filtered and the carboxylic acid formed precipitated with hydrochloric acid. For further cleaning, it can be redissolved from soda or sodium acetate.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE148349X | 1928-12-01 | ||
CH146551T | 1929-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH148349A true CH148349A (en) | 1931-07-15 |
Family
ID=25714886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH148349D CH148349A (en) | 1928-12-01 | 1929-11-13 | Process for the preparation of an m-oxy-phenylarylamine carboxylic acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH148349A (en) |
-
1929
- 1929-11-13 CH CH148349D patent/CH148349A/en unknown
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