CH135645A - Process for the preparation of an arylaminonaphthalene derivative. - Google Patents

Process for the preparation of an arylaminonaphthalene derivative.

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Publication number
CH135645A
CH135645A CH135645DA CH135645A CH 135645 A CH135645 A CH 135645A CH 135645D A CH135645D A CH 135645DA CH 135645 A CH135645 A CH 135645A
Authority
CH
Switzerland
Prior art keywords
preparation
derivative
arylaminonaphthalene
oxybenzene
oxynaphthalene
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 CH135645A publication Critical patent/CH135645A/en

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

Description

  

  Verfahren zur Darstellung eines     Arylaminonaphtalinderivates.       Analog dem im Hauptpatent beschriebenen  Verfahren kann     2-(4'-Oxy-3'-carboxyphenyl)-          aminonaphtalin    dargestellt werden, wenn man       2-Oxynaphtalin    und     4-Amirio-l-oxybenzol-2-          carbonsäure    mit     Bisulfitlauge    im offenen oder  im Druckgefäss durch Erhitzen kondensiert.

    <I>Beispiel:</I>  144 Teile     2-0xynaplitalin    werden unter  Rühren 10 Stunden lang mit 5600 Teilen  einer     Natriumbisulfitlösung    von 15      B6    und  240 Teilen des     Natriumsalzes    der     4-Amino-          1-oxybenzol-2-oai-bonsäure    auf 125-130  C  erhitzt. Nach dem Abkühlen auf 70-80  C  wird das Reaktionsprodukt, das     2-(4'-Oxy-3'-          carboxyphenyl)-aminonaphtalin        abgepresst    und  mit heissem Wasser gewaschen. Es kann  gereinigt werden durch Lösen in verdünnter       Sodalösung    und Wiederausfällen durch Säure.

    Es bildet ein grünliches hellgraues Pulver,  das leicht löslich in Alkohol und Äther ist  und bei 172-174  C schmilzt.  



  Die Verbindung dient als Zwischenprodukt  bei der Herstellung von     Farbstoffen.  



  Process for the preparation of an arylaminonaphthalene derivative. Analogous to the process described in the main patent, 2- (4'-oxy-3'-carboxyphenyl) - aminonaphthalene can be prepared if 2-oxynaphthalene and 4-amirio-1-oxybenzene-2-carboxylic acid are carried out with bisulfite lye in an open or in a pressure vessel Heating condenses.

    <I> Example: </I> 144 parts of 2-0xynaplitalin are stirred for 10 hours with 5600 parts of a sodium bisulfite solution of 15 B6 and 240 parts of the sodium salt of 4-amino-1-oxybenzene-2-oaibonic acid to 125- 130 C heated. After cooling to 70-80 ° C., the reaction product, 2- (4'-oxy-3'-carboxyphenyl) aminonaphthalene, is pressed off and washed with hot water. It can be purified by dissolving it in dilute soda solution and reprecipitating it with acid.

    It forms a greenish light gray powder that is easily soluble in alcohol and ether and melts at 172-174 C.



  The compound serves as an intermediate in the manufacture of dyes.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Aryl- aminonaphtalinderivates, dadurch gekenn zeichnet, dass man 2-Oxynaphtalin und 4- Amino-l-oxybenzol-2-carbonsäure in Gegen wart von Bisulfitlauge auf höhere Temperatur erwärmt. Es bildet ein grünliches hellgraues Pulver, das leicht löslich in Alkohol mit Äther ist und bei 172-174 C schmilzt. Die Verbindung dient als Zwischenprodukt bei der Herstellung von Farbstoffen. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Umsetzung unter Druck im geschlossenen Gefäss vor nimmt. PATENT CLAIM: Process for the preparation of an aryl aminonaphthalene derivative, characterized in that 2-oxynaphthalene and 4-amino-1-oxybenzene-2-carboxylic acid are heated to a higher temperature in the presence of bisulfite lye. It forms a greenish light gray powder that is easily soluble in alcohol with ether and melts at 172-174 C. The compound serves as an intermediate in the manufacture of dyes. SUBCLAIM: Method according to claim, characterized in that the reaction is carried out under pressure in a closed vessel.
CH135645D 1926-12-13 1927-12-03 Process for the preparation of an arylaminonaphthalene derivative. CH135645A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE135645X 1926-12-13
CH132030T 1927-12-03

Publications (1)

Publication Number Publication Date
CH135645A true CH135645A (en) 1929-09-30

Family

ID=25711762

Family Applications (1)

Application Number Title Priority Date Filing Date
CH135645D CH135645A (en) 1926-12-13 1927-12-03 Process for the preparation of an arylaminonaphthalene derivative.

Country Status (1)

Country Link
CH (1) CH135645A (en)

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