CH134841A - Process for the preparation of an arylaminonaphthalene derivative. - Google Patents

Process for the preparation of an arylaminonaphthalene derivative.

Info

Publication number
CH134841A
CH134841A CH134841DA CH134841A CH 134841 A CH134841 A CH 134841A CH 134841D A CH134841D A CH 134841DA CH 134841 A CH134841 A CH 134841A
Authority
CH
Switzerland
Prior art keywords
compound
arylaminonaphthalene
derivative
preparation
amino
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 CH134841A publication Critical patent/CH134841A/en

Links

Description

  

  Verfahren zur Darstellung eines     Arylaminonaphtalinderivates.            Anaiog    dem im Hauptpatent<B>132030</B>     be,-          schriebenen    Verfahren erhält man das 2<B>-</B>     7-          Di-(4'-o.xyphenylamiilo)-naplitalin,

      wenn     man     2<B>-</B>     7-Dioxyna.phialin    und     4-Amino-l-oxyben-          z        o   <B>'</B>     l        in        Geo-enwart        von        Bisulfitlauge        mit        oder     ohne Anwendung von Druck auf höhere Tem  peratur erhitzt,.  



  <I>Beispiel:</I>  <B>160</B> Teile 2<B>-</B>     7-Dioxynaphia.Iin    werden in  einem verbleiten     Rührkessel    mit einer Lö  sung von 400 Teilen     Alkalibisulfit    in<B>3000</B>  Teilen Wasser und<B>260</B> Teilen     4-Amino-l-          oxybenzol    etwa 120 Stunden lang unter       Rückfluss    gekocht. Nach dem Abkühlen auf  etwa<B>70 '</B>     presst    man das in hellgrauen Kri  stallen     auso-eschiedene    2     .7-Di(4'-oxyphenyl-          amino)-Naphtalin    ab und wäscht es mit  heissem Wasser.

   Die getrocknete und in  guter Ausbeute erhaltene     Verbinduno,     <B>I</B>     el     schmilzt bei 249 bis     2151   <B>' C.</B>  



  Die Verbindung ist löslich in heissem  Alkohol und in verdünnten Alkalien. Ein       Aufguss    der wässerigen alkalischen Lösung  auf Papier liefert beim Betupfen mit Chlar-         lauo-e    eine blaurote Färbung. Die Verbin  dung ist ein     Zwiselienprodukt    für :die Her  stellung von Farbstoffen.



  Process for the preparation of an arylaminonaphthalene derivative. Analogous to the process described in the main patent <B> 132030 </B>, the 2 <B> - </B> 7- di- (4'-o.xyphenylamiilo) -naplitalin is obtained,

      if you have 2 <B> - </B> 7-Dioxyna.phialin and 4-Amino-l-oxyben- zo <B> '</B> l in Geo-enwart of bisulfite liquor with or without application of pressure to higher tem temperature heated.



  <I> Example: </I> <B> 160 </B> parts 2 <B> - </B> 7-Dioxynaphia.Iin are in a leaded stirred tank with a solution of 400 parts of alkali bisulfite in <B> 3000 </B> Parts of water and <B> 260 </B> parts of 4-amino-l-oxybenzene are refluxed for about 120 hours. After cooling to about <B> 70 '</B>, the 2 .7-di (4'-oxyphenylamino) naphthalene, which is precipitated in light gray crystals, is pressed off and washed with hot water.

   The dried compound obtained in good yield, <B> I </B> el, melts at 249 to 2151 <B> 'C. </B>



  The compound is soluble in hot alcohol and in dilute alkalis. An infusion of the aqueous alkaline solution on paper produces a bluish-red color when dabbed with Chlar- lauo-e. The compound is an intermediate product for: the manufacture of dyes.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines. Aryl- aminonaphialinderivates, dadurch gekenn- zeichet, dass man 2-7-Dioxynaphtalin und 4-Amino-l-oxybenzol in Gegenwart von Bi- sulfitlauge auf höhere Temperatur erwärmt. Die Verbindung ist löslich in heissem Alkohol und in verdünnten Alkalien. Ein Aufguss der wässerigen alkalischen Lösung auf Papier liefert beim Betupfen mit Chlor lauge eine blaurote Färbung. PATENT CLAIM: Method for representing a. Arylaminonaphialin derivatives, characterized in that 2-7-dioxynaphthalene and 4-amino-1-oxybenzene are heated to a higher temperature in the presence of bisulfite liquor. The compound is soluble in hot alcohol and in dilute alkalis. An infusion of the aqueous alkaline solution on paper produces a blue-red color when dabbed with chlorine lye. Die Verbin- duno, ist ein Zwischenprodukt für die Her stellung von Farbstoffen. UNTEIRANSPRUCH: -Verfahren nach Patentanspruch, da durch gekennzeichnet, dass man die Um setzung unter Druck im geschlossenen Gefäss vornimmt. The compound is an intermediate product for the manufacture of dyes. SUBSTANTIAL CLAIM: -Process according to patent claim, characterized in that the implementation is carried out under pressure in a closed vessel.
CH134841D 1926-12-13 1927-12-03 Process for the preparation of an arylaminonaphthalene derivative. CH134841A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE134841X 1926-12-13
CH132030T 1927-12-03

Publications (1)

Publication Number Publication Date
CH134841A true CH134841A (en) 1929-08-15

Family

ID=25711750

Family Applications (1)

Application Number Title Priority Date Filing Date
CH134841D CH134841A (en) 1926-12-13 1927-12-03 Process for the preparation of an arylaminonaphthalene derivative.

Country Status (1)

Country Link
CH (1) CH134841A (en)

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