CH182585A - Process for the preparation of a heterocyclic amino compound. - Google Patents

Process for the preparation of a heterocyclic amino compound.

Info

Publication number
CH182585A
CH182585A CH182585DA CH182585A CH 182585 A CH182585 A CH 182585A CH 182585D A CH182585D A CH 182585DA CH 182585 A CH182585 A CH 182585A
Authority
CH
Switzerland
Prior art keywords
preparation
amino compound
heterocyclic amino
dimethylaminobenzothiazole
benzothiazole
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 CH182585A publication Critical patent/CH182585A/en

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Description

  

  Verfahren zur Herstellung einer     heterocyclischen        Aminoverbindung.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Darstellung einer     heterocycli-          schen        Aminoverbindung,    dadurch gekenn  zeichnet, dass man die     Benzthiazol-2-sulfo-          säure    mit     Dimethylamin    im     Autoklaven    er  hitzt.  



  Das so erhaltene     2-Dimetbylaminobenz-          thiazol    zeigt die in der Literatur angegebenen  Eigenschaften. Es soll als Zwischenprodukt  zur Herstellung von Farbstoffen und phar  mazeutischen Produkten Verwendung finden.    <I>Beispiel:</I>    10 kg     benzthiazol-2-sulfosaures    Natrium  werden mit 50 kg einer wässerigen     Dimethyl-          aminlösung        (20%ig)        unter        Zusatz        von    1     kg     Chlorzink einige Stunden im     Autoklaven    auf  ungefähr     12511    erhitzt.

   Nach Abkühlen und  Verdünnen mit Wasser wird der entstandene  Niederschlag abgesaugt, gewaschen und ge-    trocknet. Man erhält so das     2-Dimethylamino-          benzthiazol    in sehr guter     At        sbeute    und grosser  Reinheit. Es lässt sich aus wenig Alkohol       umkristallisieren    und schmilzt bei ungefähr  <B>870.</B>



  Process for the preparation of a heterocyclic amino compound. The present patent relates to a process for the preparation of a heterocyclic amino compound, characterized in that the benzothiazole-2-sulphonic acid is heated with dimethylamine in an autoclave.



  The 2-dimethylaminobenzothiazole thus obtained shows the properties given in the literature. It is intended to be used as an intermediate in the manufacture of dyes and pharmaceutical products. <I> Example: </I> 10 kg of benzothiazole-2-sulphonic acid sodium are heated to approximately 12511 for a few hours in an autoclave with 50 kg of an aqueous dimethylamine solution (20%) with the addition of 1 kg of zinc chloride.

   After cooling and dilution with water, the precipitate formed is filtered off with suction, washed and dried. The 2-dimethylaminobenzothiazole is thus obtained in a very good atomic yield and high purity. It can be recrystallized from a little alcohol and melts at around <B> 870. </B>

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer betero- cycliscben Aminoverbindung, dadurch gekenn zeichnet, dass man die Benzthiazol-2-sulfo- säure mit Dimethylamin im Autoklaven er hitzt. Das so erhaltene 2-Dimethylaminobenz- thiazol zeigt die in der Literatur angegebenen Eigenschaften. Es soll als Zwischenprodukt zur Herstellung von Farbstoffen und phar tnazeutischen Produkten Verwendung finden. PATENT CLAIM: Process for the preparation of a beterocyclic amino compound, characterized in that the benzothiazole-2-sulphonic acid is heated with dimethylamine in an autoclave. The 2-dimethylaminobenzothiazole thus obtained shows the properties given in the literature. It is intended to be used as an intermediate product in the manufacture of dyes and pharmaceutical products.
CH182585D 1933-08-29 1934-04-26 Process for the preparation of a heterocyclic amino compound. CH182585A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE182585X 1933-08-29
CH178536T 1934-04-26

Publications (1)

Publication Number Publication Date
CH182585A true CH182585A (en) 1936-02-15

Family

ID=25720136

Family Applications (1)

Application Number Title Priority Date Filing Date
CH182585D CH182585A (en) 1933-08-29 1934-04-26 Process for the preparation of a heterocyclic amino compound.

Country Status (1)

Country Link
CH (1) CH182585A (en)

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