AT26869B - Process for the preparation of non-coloring sulfonic acids of the thiazole series. - Google Patents

Process for the preparation of non-coloring sulfonic acids of the thiazole series.

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Publication number
AT26869B
AT26869B AT26869DA AT26869B AT 26869 B AT26869 B AT 26869B AT 26869D A AT26869D A AT 26869DA AT 26869 B AT26869 B AT 26869B
Authority
AT
Austria
Prior art keywords
sulfonic acids
preparation
coloring
thiazole series
thiazole
Prior art date
Application number
Other languages
German (de)
Original Assignee
Farbenfab Vorm Bayer F & Co
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
Priority claimed from DE1904165127D external-priority patent/DE165127C/de
Application filed by Farbenfab Vorm Bayer F & Co filed Critical Farbenfab Vorm Bayer F & Co
Application granted granted Critical
Publication of AT26869B publication Critical patent/AT26869B/en

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  • Thiazole And Isothizaole Compounds (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von nichtfärbenden   Sulfosäuren der Thiazolreihe.   



   Durch das Patent Nr.   25204   ist ein Verfahren zur Darstellung von Sulfosäuren der   Thia7. 0lreihe beschrieben,   welches darin besteht, dass man auf die aus aromatischen Aldehyden und den Sulfosäuren aromatischer   Amine   und deren Derivaten erhältlichen Kondensationsprodukte Alkalipolysulfide einwirken lässt. Es wurde gefunden, dass man in diesem Verfahren an Stelle der   Benzylidenverbindungen mit gleichem Erfo) g   die entsprechenden   Benzyiderivate   verwenden kann. Die betreffenden Benzylverbindungen sind   loicht erhaltlich durch Einwirkung   der entsprechenden   Benzylhalogene   auf die Sulfosäuren der   aromatischen Aminc   und deren Derivate. So erhält man z.

   B. durch Erwärmen einer wässerigen Lösung von 2.5-Amidonaphtol-7-sulfosaurem Natron mit der   ä (luivalcnten Menge   
 EMI1.1 
 200 l heissem Wasser gelöst und nach Zusatz einer konzentrierten Lösung von   30/.-   Schwefel in 75 kg kristallisiertem Schwefelnatrium 40 Stunden am Rückflusskühler gekocht. Unter   lebhafter   Schwefelwasserstoffentwicklung bildet sich der Thiazolring und zugleich 
 EMI1.2 
 durch Schwefelsäure abgeschieden und nach der Filtration in Soda wieder aufgelöst. Nach-   dem vom zurückgebliebenen Schwefel abfiltriert worden ist, wird das Natriumsalz der   Thiazolsulfosäure durch Zusatz von Kochsalz in fast farblosen Kriställchen abgeschieden. 



  Diese ist identisch mit der nach dem Verfahren des Stamm-Patentes aus der entsprechenden BenzylindenverbindungerhältlichenThiazolsulfosäure. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the preparation of non-coloring sulfonic acids of the thiazole series.



   Patent No. 25204 discloses a process for the preparation of sulfonic acids from Thia7. Oil series described, which consists in allowing the condensation products obtained from aromatic aldehydes and the sulfonic acids of aromatic amines and their derivatives to act on alkali metal polysulfides. It has been found that, in this process, the corresponding benzylidene derivatives can be used in place of the benzylidene compounds with the same success. The benzyl compounds in question can easily be obtained by the action of the corresponding benzyl halogens on the sulfonic acids of the aromatic amines and their derivatives. So you get z.

   B. by heating an aqueous solution of 2.5-amidonaphthol-7-sulfonic acid soda with the equivalent amount
 EMI1.1
 Dissolved 200 l of hot water and, after adding a concentrated solution of 30% sulfur in 75 kg of crystallized sodium sulphide, boiled for 40 hours on a reflux condenser. The thiazole ring forms with vigorous evolution of hydrogen sulfide and at the same time
 EMI1.2
 deposited by sulfuric acid and redissolved in soda after filtration. After the remaining sulfur has been filtered off, the sodium salt of thiazole sulfonic acid is deposited in almost colorless crystals by adding common salt.



  This is identical to the thiazole sulfonic acid obtainable from the corresponding benzyl indene compound by the process of the parent patent.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Abänderung des durch das Patent Nr. 25204 geschützten Verfahrens zur Darstellung von nicht färbenden Sulfosäuren der Thiazolreihe, darin bestehend, dass man an Stelle der aus aromatischen Aldehyden und Sulfosäuren aromatischer Amine oder deren Derivaten EMI1.3 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Modification of the process protected by patent no. 25204 for the preparation of non-coloring sulfonic acids of the thiazole series, consisting in using aromatic amines or their derivatives instead of aromatic aldehydes and sulfonic acids EMI1.3 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT26869D 1904-06-30 1905-11-23 Process for the preparation of non-coloring sulfonic acids of the thiazole series. AT26869B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1904165127D DE165127C (en) 1904-06-30

Publications (1)

Publication Number Publication Date
AT26869B true AT26869B (en) 1906-12-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
AT26869D AT26869B (en) 1904-06-30 1905-11-23 Process for the preparation of non-coloring sulfonic acids of the thiazole series.

Country Status (1)

Country Link
AT (1) AT26869B (en)

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