CH148351A - 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
CH148351A
CH148351A CH148351DA CH148351A CH 148351 A CH148351 A CH 148351A CH 148351D A CH148351D A CH 148351DA CH 148351 A CH148351 A CH 148351A
Authority
CH
Switzerland
Prior art keywords
oxy
carboxylic acid
preparation
phenylarylamine
dimethyldiphenylamine
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 CH148351A publication Critical patent/CH148351A/en

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung einer     m-Ogy-phenylarylaminearbonsfiure.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung einer     m-Oxy-phenyl-          arylamincar,bonsäure,    dadurch gekennzeichnet,  dass man ein     Alkalisalz    von     3-Oxy-2'4'-dime-          thyldiphenylamin    mit     Kohlensäure    unter Druck  erhitzt.  



  Die     3-Oxy-2'4'-dimethyldiphenylamin-          carbonsäure    ist ein grauviolettes Pulver, das  nach dem     Umkristallisieren    aus Benzol den  Schmelzpunkt<B>1750</B> C zeigt. Ihre alkoholische  Lösung gibt mit verdünnter Eisenchlorid  lösung eine intensive violette Färbung. Das  Produkt soll als Zwischenprodukt zur Her  stellung vor) Farbstoffen verwendet werden.

    <I>Beispiel:</I>  1278 Teile 3 -     Oxy-2'4'-dimethyldiphenyl-          amin    werden mit 390,8 Teilen     Ätzkali,        83,8o/oig     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 Erkalten der  Reaktionsmasse leitet man Kohlensäure bis    zu einem Druck von 10 Atmosphären ein und  erhitzt auf 170 o während 16 Stunden. Die  erkaltete Schmelze wird in heissem Wasser  gelöst, filtriert und die gebildete     Carbonsäure     mit Salzsäure gefällt.

   Zur weitem Reinigung  kann dieselbe aus Soda oder     Natriumacetat     umgelöst werden.



  Process for the preparation of a m-Ogy-phenylarylaminearboxylic acid. The present patent relates to a process for the production of an m-oxy-phenyl-arylamine-carboxylic acid, characterized in that an alkali salt of 3-oxy-2'4'-dimethyldiphenylamine is heated with carbonic acid under pressure.



  The 3-oxy-2'4'-dimethyldiphenylamine carboxylic acid is a gray-violet powder which has a melting point of 1750 C after recrystallization from benzene. Their alcoholic solution gives an intense purple color with a dilute ferric chloride solution. The product is intended to be used as an intermediate for the manufacture of pre) dyes.

    <I> Example: </I> 1278 parts of 3-oxy-2'4'-dimethyldiphenylamine are dissolved with 390.8 parts of caustic potash, 83.8% and 2000 parts of water in an autoclave equipped with a stirrer brought and the water was distilled off in vacuo until the potassium salt formed was completely dry. After the reaction mixture has cooled down, carbonic acid is introduced up to a pressure of 10 atmospheres and the mixture is heated to 170 ° for 16 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- phenylarylamincarbonsäure, dadurch gekenn zeichnet, dass man ein Alkalisalz von S-Oxy- 2'4'-dimethyldiphenylamici mit Kohlensäure unter Druck erhitzt. Die 3 - Oxy - 2'4'- dimethyldiphenylamin- carbonsäure ist ein grauviolettes Pulver, das nach dem Umkristallisieren aus Benzol den Schmelzpunkt<B>175'</B> C zeigt. PATENT CLAIM: A process for the production of an m-oxyphenylarylamine carboxylic acid, characterized in that an alkali salt of S-oxy-2'4'-dimethyldiphenylamici is heated with carbonic acid under pressure. The 3-oxy-2'4'-dimethyldiphenylamine-carboxylic acid is a gray-violet powder which, after recrystallization from benzene, has a melting point of <B> 175 '</B> C. Ihre alkoholisehe Lösung gibt mit verdünnter Eisenchlorid- lösung eine intensive violette Färbung. Your alcoholic solution gives an intense purple color with a dilute ferric chloride solution.
CH148351D 1928-12-01 1929-11-13 Process for the preparation of an m-oxy-phenylarylamine carboxylic acid. CH148351A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE148351X 1928-12-01
CH146551T 1929-11-13

Publications (1)

Publication Number Publication Date
CH148351A true CH148351A (en) 1931-07-15

Family

ID=25714888

Family Applications (1)

Application Number Title Priority Date Filing Date
CH148351D CH148351A (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) CH148351A (en)

Similar Documents

Publication Publication Date Title
CH148351A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
CH148347A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
CH148348A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
CH148350A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
CH148352A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
CH148346A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
CH148354A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
CH148353A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
CH148344A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
CH148349A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
DE536997C (en) Process for the preparation of 1-methyl-4-chloro-3-oxybenzene-2-carboxylic acid
CH149890A (en) Process for the preparation of a substituted m-oxy-diphenylamine carboxylic acid.
CH148355A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
CH148345A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
CH149891A (en) Process for the preparation of a substituted m-oxy-diphenylamine carboxylic acid.
DE559333C (en) Process for the preparation of 1-oxyanthracene-2-carboxylic acid
DE932125C (en) Process for the rearrangement of naphthalic acid into naphthalene-2,6-dicarboxylic acid
CH148356A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.
DE527395C (en) Process for the preparation of 1-methyl-4-chloro-2-oxybenzene-3-carboxylic acid
DE554235C (en) Process for the preparation of 2,7-dioxynaphthalene-3,6-dicarboxylic acid
DE415314C (en) Process for the production of a nuclear brominated acetobrenzcatechin dibenzyl ether
DE525654C (en) Process for the preparation of an o-amino-p-cresol carbonic acid
DE512233C (en) Process for the preparation of 1-aminocarbazole and its derivatives
DE527394C (en) Process for the preparation of 1-methyl-2-chloro-4-oxybenzene-5-carboxylic acid
CH146551A (en) Process for the preparation of an m-oxy-phenylarylamine carboxylic acid.