CH148347A - 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
- CH148347A CH148347A CH148347DA CH148347A CH 148347 A CH148347 A CH 148347A CH 148347D A CH148347D A CH 148347DA CH 148347 A CH148347 A CH 148347A
- Authority
- CH
- Switzerland
- Prior art keywords
- oxy
- preparation
- carboxylic acid
- phenylarylamine
- acid
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung einer m-Oxy-phenylarylaminearbonsilure. Vorliegendes Patent bezieht sich auf ein Verfahren zurHerstellung einer m-Oxy-phenyl- arylainitiearbotisäure, dadurch gekennzeichnet, dass man ein Alkalisalz von 3-Oxy-4-phen- oxydiphenylamin mit Kohlensäure unter Druck erhitzt.
Die 3-Oxy-4-phenoxydiphenylaminearboii- saure ist ein graubraunes Pulver, das nach dem Umkristallisieren <B>-</B> aus Eisessig den Schmelzpunkt<B>189' 0</B> zeigt.'Ihre alkoholische Lösung gibt mit verdünnter Eisenehloridlösung eine intensive, violette Färbung. Das Produkt soll als Zwischenprodukt zur Herstellung von Farbstoffen verwendet werden.
<I>Beispiel:</I> <B>831</B> Teile S-Oxy-4'-phe.noxydiplienylarniii werden mit 200,4 Teilen Ätzkali 83,
8 %ig und 2000 Teilen Wasser in einem mit Rühr werk versehenen Autoklaven in Lösung ge bracht und das Wasser im Vakuum bis zur völligen Trockenheit des gebildeten Kalium- salzes abdestilliert. Nach dem<B>Ei</B> rkalten der Re aktionsmasse leitet man Kohlensäure bis zu einem Druck von<B>10</B> Atmosphären ein underhitzt auf<B>150 0 C</B> während<B>16</B> Stunden. Die erkaltete Schmelze wird in heissem 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 an m-oxy-phenylarylaminearboxylic acid. The present patent relates to a process for the preparation of an m-oxy-phenyl-arylation-arbotic acid, characterized in that an alkali salt of 3-oxy-4-phenoxydiphenylamine is heated with carbonic acid under pressure.
The 3-oxy-4-phenoxydiphenylamino acidic acid is a gray-brown powder which, after recrystallization from glacial acetic acid, has a melting point of 189 '0.' Your alcoholic solution gives with dilute Iron chloride solution has an intense, violet color. The product is intended to be used as an intermediate in the manufacture of dyes.
<I> Example: </I> <B> 831 </B> parts of S-Oxy-4'-phe.noxydiplienylarniii are mixed with 200.4 parts of caustic potash 83,
8% and 2000 parts of water are dissolved 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 introduced up to a pressure of <B> 10 </B> atmospheres and heated to <B> 150 ° C. </B> for <B> 16 < / B> hours. The cooled melt is dissolved in hot water, filtered and the carboxylic acid formed is 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 |
---|---|---|---|
DE148347X | 1928-12-01 | ||
CH146551T | 1929-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH148347A true CH148347A (en) | 1931-07-15 |
Family
ID=25714884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH148347D CH148347A (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) | CH148347A (en) |
-
1929
- 1929-11-13 CH CH148347D patent/CH148347A/en unknown
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