CH143280A - Process for the preparation of a p-oxyaryl-B-naphthylamino-carboxylic acid. - Google Patents

Process for the preparation of a p-oxyaryl-B-naphthylamino-carboxylic acid.

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Publication number
CH143280A
CH143280A CH143280DA CH143280A CH 143280 A CH143280 A CH 143280A CH 143280D A CH143280D A CH 143280DA CH 143280 A CH143280 A CH 143280A
Authority
CH
Switzerland
Prior art keywords
preparation
carboxylic acid
oxy
oxyaryl
naphthylamino
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 CH143280A publication Critical patent/CH143280A/en

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

Description

  

  
EMI0001.0001     
  
    Yerfahren <SEP> zur <SEP> Darstellung <SEP> einer <SEP> p-Oxyai-yl-@-naplitliylamino-e:irbonsäure.       Vorliegendes Patent bezieht sich auf       ein    Verfahren zur Darstellung einer     2-(4'-          01y    -     ?'-        inethyl    -     phenylamino)    -     naphthalin-          carbon        säure,    dadurch gekennzeichnet, dass  man ein     Alkalisalz    des     2-(-1'-Oxy-?'-methyl-          hlienylamino)

  -naphtlia.lins    unter Druck mit       Kohlensire    auf höhere     Temperatur    erhitzt.  



  Die so erhaltene neue     Carbonsäure    stellt.       -m        Toluol        umkristallisiert        gelbe        Nadeln        dar          voni    Schmelzpunkt     213-214     . Ihre     ver-          (liinnte    alkoholische Lösung wird     naeli        Zu-          > <  < tz    von Eisenchlorid dunkelviolett.

   Das       Produkt.    soll als Zwischenprodukt zur     Her-          stf,lluii-,    von Farbstoffen verwendet werden.       Beispiel:          2-19    Teile     2'-(4'-Oxy-2'-methyl-pheiiyl-          a        minn        )

  -naphthalin    werden mit 66 Teilen       Ätzkali        83%ig    in 750 Teilen Wasser     ge-          löst.    Die so erhaltene     Lösung    wird im     Va-          kuum     und die     Masse    nach dein       Erkalten    mit Kohlensäure unter allmählicher       Steigerung    des Druckes auf 25     Atm.    ge  sättigt, langsam bis auf<B>170'</B> erhitzt und    bei dieser Temperatur während     1\?        Stunden     belassen.

   Die Aufarbeitung der erkalteten       Masse    erfolgt durch Lösen in Wasser, Fil  trieren und Fällen mit verdünnter Salzsäure.  Die erhaltene Rohsäure kann durch Lösen  in verdünntem essigsauren Natron und noch  maliges Fällen gereinigt werden.



  
EMI0001.0001
  
    Yerfahren <SEP> for <SEP> representation <SEP> of a <SEP> p-oxyai-yl - @ - naplitliylamino-e: irboxylic acid. The present patent relates to a process for the preparation of a 2- (4'- 01y -? '- ynethyl - phenylamino) - naphthalenecarboxylic acid, characterized in that an alkali salt of 2 - (- 1'-oxy-?' -methyl- hlienylamino)

  -naphtlia.lins heated to a higher temperature under pressure with carbon dioxide.



  The new carboxylic acid thus obtained provides. Yellow needles recrystallized from toluene, melting point 213-214. Their combined alcoholic solution becomes dark purple after the addition of ferric chloride.

   The product. is intended to be used as an intermediate product for the manufacture of dyes. Example: 2-19 parts of 2 '- (4'-Oxy-2'-methyl-pheiiyl- a minn)

  Naphthalene is dissolved with 66 parts of 83% caustic potash in 750 parts of water. The solution thus obtained is in a vacuum and the mass after cooling with carbonic acid while gradually increasing the pressure to 25 atm. saturated, slowly heated to <B> 170 '</B> and kept at this temperature for 1 \? Leave hours.

   The cold mass is worked up by dissolving it in water, filtering it and precipitating it with dilute hydrochloric acid. The raw acid obtained can be purified by dissolving it in dilute sodium acetate and precipitating it again.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer 2-(-1'@ Oxy - 2'- methyl - phenylamino) - naphthalin- carbonsä.ure, dadurch gekennzeichnet, da.ss man ein Alkalisalz des 2-(4'-Oxy-2'-m(,thyl- phenylaniino)-naphthalins unter Druck mit Kohlensäure auf höhere Temperatur erhitzt. PATENT CLAIM: Process for the preparation of a 2 - (- 1 '@ Oxy - 2'-methyl - phenylamino) - naphthalenecarboxylic acid, characterized in that an alkali salt of 2- (4'-oxy-2'- m (, thylphenylaniino) naphthalene heated to a higher temperature under pressure with carbonic acid. Die so erhaltene neue - Carbonsäure stellt aus Toluol umkristallisiert gelbe Nadeln dar vom Schmelzpunkt 213-214'. Ihre ver dünnte alkoholische Lösung wird nach Zu satz von Eisenchlorid dunkelviolett. The new carboxylic acid obtained in this way represents yellow needles recrystallized from toluene with a melting point of 213-214 '. Your diluted alcoholic solution turns dark purple after adding ferric chloride.
CH143280D 1928-03-06 1929-03-05 Process for the preparation of a p-oxyaryl-B-naphthylamino-carboxylic acid. CH143280A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE670852X 1928-03-06
CH141533T 1929-03-05

Publications (1)

Publication Number Publication Date
CH143280A true CH143280A (en) 1930-10-31

Family

ID=25713779

Family Applications (2)

Application Number Title Priority Date Filing Date
CH143281D CH143281A (en) 1928-03-06 1929-03-05 Process for the preparation of a p-oxyaryl-B-naphthylamino-carboxylic acid.
CH143280D CH143280A (en) 1928-03-06 1929-03-05 Process for the preparation of a p-oxyaryl-B-naphthylamino-carboxylic acid.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH143281D CH143281A (en) 1928-03-06 1929-03-05 Process for the preparation of a p-oxyaryl-B-naphthylamino-carboxylic acid.

Country Status (1)

Country Link
CH (2) CH143281A (en)

Also Published As

Publication number Publication date
CH143281A (en) 1930-10-31

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