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.

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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
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 CH148347A publication Critical patent/CH148347A/en

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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)

PATENTANSPRUCH: Verfahren zur Herstellung einer m-Oxy- pheriylarylaminearbonsäLire., dadurch gekenn zeichnet, dass man ein Alkalisalz von 3-Oxy- 4'-pheiioxdipheiiylamin mit Kohlensäure unter Druck erhitzt. Die 3-Oxy-4'-pherioxydiphetiyiainiiicarboii- säure ist ein graubrauries Pulver, das nach dein Umkristallisieren aus Eisessig den Schmelz punkt<B>189 0</B> C zeigt. PATENT CLAIM: Process for the production of a m-Oxy- pheriylarylaminearbonsäLire., Characterized in that an alkali salt of 3-oxy-4'-pheiioxdipheiiylamin heated with carbonic acid under pressure. The 3-oxy-4'-pherioxydiphetiyiainiiicarboii- acid is a gray-brown powder, which shows the melting point <B> 189 0 </B> C after recrystallization from glacial acetic acid. Ihre alkoholiselie Lösung gibt mit verdünnter Eisenchloridlösting eine intensive violette Färbung. Your alcoholic solution gives an intense purple color with diluted ferric chloride solution.
CH148347D 1928-12-01 1929-11-13 Process for the preparation of an m-oxy-phenylarylamine carboxylic acid. CH148347A (en)

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)

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