CH148356A - 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
- CH148356A CH148356A CH148356DA CH148356A CH 148356 A CH148356 A CH 148356A CH 148356D A CH148356D A CH 148356DA CH 148356 A CH148356 A CH 148356A
- Authority
- CH
- Switzerland
- Prior art keywords
- oxy
- preparation
- phenylarylamine
- carboxylic acid
- acid
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung einer m-Oxy-phenylarylaminearboiisäure. Vorliegendes Patent bezieht sieh auf ein Verfahren zur Herstellung einer m-Oxy- phenylaryla.minearbonsä,ure, dadurch gekenn zeichnet, dass man ein Alkalisalz von 3-Oxy- 2'-methyl-5'-chlordiphenylamin mit Kohlen säure unter Druck erhitzt.
Die 3-Oxy-2-methyl-5'-chlordiplienyl- aminearbonsäure ist ein graubraunes Pulver, das nach dem Umkristallisieren aus Eisessig den Schmelzpunkt<B>208</B> bis 210'<B>C</B> zeigt. Ihre alkoholische Lösung gibt mit ver dünnter Eisenehloridlösung eine violette Fär bung. Das Produkt soll als Zwiselienprodukt zur Herstellung von Farbstoffen verwendet werden.
<I>Beispiel:</I> <B>1170</B> Teile<B>3 -</B> Oxy <B>-</B> 2'- methyl <B>-</B> 5'- chlor- diphenylamin werden mit 334 Teilen Ätz- hali und<B>1500</B> Teilen Wasser in einem mit Rührwerk verselienen Autoklaven in Lö sung gebracht und das Wasser im Vakuum bis zur völligen Trockenheit des gebildeten Kaliumsalzes abdestilliert. Nach dem Er halten der Reaktionsmasse leitet man Kohlen- säure bis zu einem Druck von<B>10</B>
Atin. ein und erhitzt auf<B>170' C</B> während<B>16</B> Stunden. Die erkaltete Schmelze wird in heissem Wasser gelöst, filtriert und die gebildete Carbonsäure mit Salzsäure gefällt. Zur wei teren Reinigung kann dieselbe aus Soda oder Natriumaceta,t umgelöst werden.
Process for the preparation of an m-oxy-phenylarylamine acidic acid. The present patent relates to a process for the preparation of an m-oxyphenylaryla.minearboxylic acid, characterized in that an alkali salt of 3-oxy-2'-methyl-5'-chlorodiphenylamine is heated with carbonic acid under pressure.
The 3-oxy-2-methyl-5'-chlorodiplienyl-aminearboxylic acid is a gray-brown powder which, after recrystallization from glacial acetic acid, has a melting point of <B> 208 </B> to 210 '<B> C </B>. Your alcoholic solution gives a violet coloration with a diluted iron chloride solution. The product is intended to be used as an intermediate product for the manufacture of dyes.
<I> Example: </I> <B> 1170 </B> parts <B> 3 - </B> Oxy <B> - </B> 2'- methyl <B> - </B> 5 ' - Chlorodiphenylamine are dissolved with 334 parts of caustic and 1500 parts of water in an autoclave fitted with a stirrer and the water is distilled off in vacuo until the potassium salt formed is completely dry. After the reaction mass has been obtained, carbonic acid is passed up to a pressure of <B> 10 </B>
Atin. on and heated to <B> 170 '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 purification, it can be made up of soda or sodium acetate.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE148356X | 1928-12-01 | ||
CH146551T | 1929-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH148356A true CH148356A (en) | 1931-07-15 |
Family
ID=25714893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH148356D CH148356A (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) | CH148356A (en) |
-
1929
- 1929-11-13 CH CH148356D patent/CH148356A/en unknown
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