CH139070A - Process for the preparation of an oxythionaphthene. - Google Patents

Process for the preparation of an oxythionaphthene.

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Publication number
CH139070A
CH139070A CH139070DA CH139070A CH 139070 A CH139070 A CH 139070A CH 139070D A CH139070D A CH 139070DA CH 139070 A CH139070 A CH 139070A
Authority
CH
Switzerland
Prior art keywords
preparation
oxythionaphthene
methoxy
heated
methoxybenzene
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 CH139070A publication Critical patent/CH139070A/en

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

Description

  

  Verfahren zur Darstellung eines     Oxythionaphtens.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Darstellung des     6-Methoxy-          3-oxythionaphteris,    welches dadurch gekenn  zeichnet ist,     dass    man die     4-Methoxybenzol-          1-earboxyamido-2-thioglykolsäure    mit wässeri  gen Alkalien erhitzt.  



  <I>Beispiel:</I>  <B>80</B> Gewichtsteile     4-Methoxybenzol-l-earb-          oxvamino-2-thioglykolsäure    werden mit<B>300</B>  Gewichtsteilen Natronlauge 40' 136 auf<B>90"</B>  erhitzt- man setzt noch<B>180</B> Teile Wasser  hinzu und erhitzt die breiige Masse eine  Stunde auf<B>100 0.</B> Die dabei vor sich gehende  Entwicklung von Ammoniak hat nach dieser  Zeit nachgelassen. Man löst hierauf in<B>3000</B>  Teilen Wasser und gewinnt aus dieser Lösung,    ohne     dass    die Isolierung des gebildeten     6-          Methoxy-S-oxythionaphtens    erforderlich wäre,  durch Oxydation den 6.6'-Methoxythioindigo.-



  Process for the preparation of an oxythionaphthene. The present patent is a process for the preparation of 6-methoxy-3-oxythionaphteris, which is characterized in that the 4-methoxybenzene-1-earboxyamido-2-thioglycolic acid is heated with aqueous alkalis.



  <I> Example: </I> <B> 80 </B> parts by weight of 4-methoxybenzene-l-earb-oxvamino-2-thioglycolic acid are mixed with <B> 300 </B> parts by weight of caustic soda 40 '136 to <B> 90 "</B> is heated - <B> 180 </B> parts of water are added and the pasty mass is heated to <B> 100 0 for one hour. </B> The ammonia development that takes place in the process continues The solution is then dissolved in <B> 3000 </B> parts of water and the 6,6'-methoxythioindigo is obtained from this solution by oxidation, without the isolation of the 6-methoxy-S-oxythionaphthene formed.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung des 6-Methoxy- 3-o'xythionaphtens, dadurch gekennzeichnet, dass man die 4-Methoxybenzol-l-carboxyamido- 2-thioglykolsäure mit wässerigen Alkalien erhitzt. Das erhaltene 6-Methoxy--3'oxythio- naphten kann durch Oxydation in den be kannten 6.6'-Dimetboxythioindigo übergeführt werden. PATENT CLAIM: Process for the preparation of 6-methoxy-3-o'xythionaphtens, characterized in that the 4-methoxybenzene-1-carboxyamido-2-thioglycolic acid is heated with aqueous alkalis. The 6-methoxy-3'oxythio- naphthene obtained can be converted into the known 6.6'-dimetboxythioindigo by oxidation.
CH139070D 1927-04-16 1928-04-14 Process for the preparation of an oxythionaphthene. CH139070A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE139070X 1927-04-16
CH136035T 1928-04-14

Publications (1)

Publication Number Publication Date
CH139070A true CH139070A (en) 1930-03-31

Family

ID=25712599

Family Applications (1)

Application Number Title Priority Date Filing Date
CH139070D CH139070A (en) 1927-04-16 1928-04-14 Process for the preparation of an oxythionaphthene.

Country Status (1)

Country Link
CH (1) CH139070A (en)

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