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.

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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
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH148356A publication Critical patent/CH148356A/en

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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)

PATENTANSPRUCH: -Verfahren zur Herstellung einer m-Oxy- phenylarylaminearbonsäure, dadurch gekenn zeichnet, dass man ein Alkalisalz von 3-Oxy- 2 <B>1</B> -methyl-5'-chlordiphenylamin mit Kohlen säure unter Druck erhitzt. Die 3-Oxy-2'-methyl-5'-clilordiphenyl- aininearbonsäure ist ein graubraunes Pulver, das nach dem Umkristallisieren aus Eisessig den Schmelzpunkt<B>208</B> bis 210<B>' C</B> zeigt. PATENT CLAIM: -Process for the production of an m-oxyphenylarylaminearboxylic acid, characterized in that an alkali salt of 3-oxy-2 1 -methyl-5'-chlorodiphenylamine is heated with carbonic acid under pressure. The 3-oxy-2'-methyl-5'-clilordiphenyl-aininearbonsäure 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>. Ihre alkoholische Lösung gibt mit ver dünnter Eisenehoridlösung eine violette Färbung. Their alcoholic solution gives a purple color with a dilute iron chloride solution.
CH148356D 1928-12-01 1929-11-13 Process for the preparation of an m-oxy-phenylarylamine carboxylic acid. CH148356A (en)

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)

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