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CH201176A - Process for the preparation of a 4-oxy-naphthostyril body. - Google Patents

Process for the preparation of a 4-oxy-naphthostyril body.

Info

Publication number
CH201176A
CH201176A CH201176DA CH201176A CH 201176 A CH201176 A CH 201176A CH 201176D A CH201176D A CH 201176DA CH 201176 A CH201176 A CH 201176A
Authority
CH
Switzerland
Prior art keywords
naphthostyril
oxy
preparation
chloro
heated
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 CH201176A publication Critical patent/CH201176A/en

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Description

  

  Verfahren zur Herstellung eines     4-Ogy-naphthostyrilkörpers.       Vorliegendes Patent bezieht sich auf     ein     Verfahren zur Herstellung von     4-Oxy-2-          chlor-naphthostyril,    welches dadurch gekenn  zeichnet     ist,    dass man ein mineralsaures Salz  von     4-Amino-2-chlor-naphthostyril    in Gegen  wart von Wasser auf Temperaturen von 150  bis 200   C erhitzt.  



  Das so erhaltene neue     4-Oxy-2-chlor-naph-          thostyril    ist ein gelbbraunes Produkt, das  sich     mit    roter Farbe in     Alkalilauge    und mit  gelber Farbe     in    Alkohol löst. Bei raschem  Erhitzen schmilzt es unter     Zersetzung    bei  375 bis 380   C.. Es soll zur Darstellung von  Farbstoffen und     Heilmitteln        Verwendung     finden.  



  <I>Beispiel:</I>  220 Teile     4-Amino-2-chlor-naphthostyril     werden etwa 2000 Teilen Wasser und 100  Teilen 96%iger Schwefelsäure vier     Stunden          auf    etwa 190   C erhitzt. Das durch Ab  saugen des erkalteten Reaktionsproduktes ab-    geschiedene     4-Oxy-2-chlornaphthostyril    wird  zur Reinigung in Natronlauge gelöst,     filtriert     und mit Salzsäure gefällt.



  Process for making a 4-ogy-naphthostyril body. The present patent relates to a process for the preparation of 4-oxy-2-chloro-naphthostyril, which is characterized in that a mineral acid salt of 4-amino-2-chloro-naphthostyril in the presence of water at temperatures of 150 heated to 200 C.



  The new 4-oxy-2-chloro-naphthostyril obtained in this way is a yellow-brown product which dissolves in alkali with a red color and in alcohol with a yellow color. When heated rapidly, it melts with decomposition at 375 to 380 ° C. It is said to be used for the preparation of dyes and medicinal products.



  <I> Example: </I> 220 parts of 4-amino-2-chloro-naphthostyril are heated to about 2000 parts of water and 100 parts of 96% sulfuric acid at about 190 ° C. for four hours. The 4-oxy-2-chloronaphthostyril separated by suction of the cooled reaction product is dissolved in sodium hydroxide solution for purification, filtered and precipitated with hydrochloric acid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von 4-Oxy-2- chlor-naphthostyril, dadurch gekennzeichnet, dass man ein mineralsaures Salz von 4-Amino- 2-chlor-naphthostyril in Gegenwart von Was ser auf Temperaturen von 150 bis 200 C erhitzt. Das so erhaltene neue 4-Oxy-2-chlor- naphthostyril ist ein gelbbraunes Produkt, das sich mit roter Farbe in Alkalilauge und mit gelber Farbe in Alkoholen löst. PATENT CLAIM: A process for the production of 4-oxy-2-chloro-naphthostyril, characterized in that a mineral acid salt of 4-amino-2-chloro-naphthostyril is heated to temperatures of 150 to 200 C in the presence of water. The new 4-oxy-2-chloronaphthostyril obtained in this way is a yellow-brown product which dissolves in alkali lye with a red color and in alcohols with a yellow color. Bei raschem Erhitzen schmilzt es unter Zerset zung bei 375 bis<B>380'</B> C. When heated quickly, it melts with decomposition at 375 to <B> 380 '</B> C.
CH201176D 1935-08-14 1936-08-07 Process for the preparation of a 4-oxy-naphthostyril body. CH201176A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201176X 1935-08-14
CH194453T 1936-08-07

Publications (1)

Publication Number Publication Date
CH201176A true CH201176A (en) 1938-11-15

Family

ID=25722676

Family Applications (1)

Application Number Title Priority Date Filing Date
CH201176D CH201176A (en) 1935-08-14 1936-08-07 Process for the preparation of a 4-oxy-naphthostyril body.

Country Status (1)

Country Link
CH (1) CH201176A (en)

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