CH206118A - Process for the preparation of a thiazolium compound. - Google Patents

Process for the preparation of a thiazolium compound.

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Publication number
CH206118A
CH206118A CH206118DA CH206118A CH 206118 A CH206118 A CH 206118A CH 206118D A CH206118D A CH 206118DA CH 206118 A CH206118 A CH 206118A
Authority
CH
Switzerland
Prior art keywords
methyl
hydrochloride
preparation
thiazolium
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 CH206118A publication Critical patent/CH206118A/en

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Description

  

  Verfahren zur Darstellung einer     Thiazoliumverbindung.       Das Hauptpatent betrifft die Herstellung  von     Pyrimidylthiazoliumverbirrdungen,    die  im Hinblick auf ihre     antineuritische    Wirkung  wertvoll sind.  



       Gegenstand    des vorliegenden Patentes ist  ein Verfahren zur Herstellung einer     Thiazo-          liumverbindung,    welches dadurch gekenn  zeichnet ist, dass man     2-1lfethyl-4-amino-5-          chlor:netlryl-pyrimidirr-hydrochlorid    auf     4-Me-          thyl-5-oxyäthylthiazol    einwirken lässt und  das entstandene     N-(2'-1fIethyl-4'-amino-pyri-          midyl-(5')-        methyl)    - 4 -     methyl-    5     -ogyäthyl-thi-          azoliumchlorid-hydrochlorid    abscheidet.

   Das  Reaktionsprodukt fällt man     zweckmässig    aus  dessen alkoholischer Lösung mit ätherischer       Chlorwasserstoffsäure    aus.  



  Das so erhältliche Hydrochlorid des N  (2'-Methyl-4'-am     ino-pyrirnidy    1-     (5')        -methyl)-4-          methyl-5-oxyäthyl-thiazoliurnchlorids    bildet  gelbe Kristalle vom Schmelzpunkt<B>250'.</B> Es  ist leicht löslich in Wasser. Es hat sich als       pientisch    mit dem     antineuritischen    Vitamin         BI        (Aneurin)        erwiesenund    soll therapeutische  Anwendung finden.  



  <I>Beispiel:</I>  2 g     2-Methyl-4-amino-5-chlormethylpyri-          midin    werden in Form des Hydrochlorids  mit 1 g     4-Methyl-5-ogyäthylthiazol    1 Stunde  im Wasserbad erwärmt. Man zieht dann die  Schmelze wiederholt mit Äther aus, löst den  Rückstand in wasserfreiem Alkohol und setzt  ätherische     Ohlorwasserstoffsäure    zu. Dabei  fällt das Hydrochlorid des     N-(2'-Methyl-4'-          amino    -     pyrimidyl    -     5'-        methyl)-4-methyl-5-oxy-          äthyl-thiazoliumclrlorids    in Kristallen vom  F. 250   (unter Zersetzung) aus.  



  Die als Ausgangsstoff verwendete     Pyrimi-          dinverbindung    erhält man durch Einwirken  einer Lösung von 1 g     Natriumnitrit    in wenig  Wasser auf eine Suspension von     2-Methyl-4-          amino-    5     -ami        rromethylpyrimidin-hydrochlorid     in 50 cm' konzentrierter Salzsäure, Einengen  der Lösung, nachdem die Stickstoffentwick-           tung    beendet ist,     Alkalischmachen    der Mi  schung unter Kühlen mit     Kaliumcarbonat,     Extrahieren der Base mit Äther, Trocknen  der ätherischen Lösung über     Kaliumcarbonat,

       Abdampfen des Äthers und Umwandlung des  in farblosen Kristallen erhaltenen     2-Methyl-          4-amino-5-chlor-methylpyrimidirrs    in das Hy  drochlorid mittels ätherischer Chlorwasser  stoffsäure.



  Process for the preparation of a thiazolium compound. The main patent relates to the manufacture of pyrimidylthiazolium compounds which are valuable in terms of their antineuritic effect.



       The subject of the present patent is a process for the production of a thiazolium compound, which is characterized in that 2-1lfethyl-4-amino-5-chloro: methyl-pyrimidir-hydrochloride is acted on 4-methyl-5-oxyethylthiazole leaves and the resulting N- (2'-1fIethyl-4'-aminopyrimidyl- (5 ') - methyl) - 4 - methyl-5 -ogyethyl-thiazolium chloride hydrochloride separates.

   The reaction product is expediently precipitated from its alcoholic solution with ethereal hydrochloric acid.



  The hydrochloride of N (2'-methyl-4'-aminopyrirnidy 1- (5 ') -methyl) -4-methyl-5-oxyethyl-thiazolium chloride obtainable in this way forms yellow crystals with a melting point of 250 ° / B> It is easily soluble in water. It has been shown to be pientic with the antineuritic vitamin BI (aneurine) and is intended to find therapeutic use.



  <I> Example: </I> 2 g of 2-methyl-4-amino-5-chloromethylpyrimidine are heated in the form of the hydrochloride with 1 g of 4-methyl-5-ogyäthylthiazole for 1 hour in a water bath. The melt is then repeatedly extracted with ether, the residue is dissolved in anhydrous alcohol and ethereal hydrochloric acid is added. The hydrochloride of N- (2'-methyl-4'-amino-pyrimidyl-5'-methyl) -4-methyl-5-oxy-ethyl-thiazolium chloride precipitates in crystals with a melting point of 250 (with decomposition).



  The pyrimidine compound used as starting material is obtained by the action of a solution of 1 g of sodium nitrite in a little water on a suspension of 2-methyl-4-amino-5-ami rromethylpyrimidine hydrochloride in 50 cm 'of concentrated hydrochloric acid, after concentrating the solution the evolution of nitrogen has ended, make the mixture alkaline while cooling with potassium carbonate, extract the base with ether, dry the ethereal solution over potassium carbonate,

       Evaporation of the ether and conversion of the 2-methyl-4-amino-5-chloro-methylpyrimidirrs obtained in colorless crystals into the hydrochloride by means of ethereal hydrochloric acid.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer Thiazo- liumverbindung, dadurch gekennzeichnet, dass man auf 4-Metlryl-b-oxyäthylthiazol 2-Me- thyl - 4 - amino- 5 -chlormethylpyrimidirr-hydro- ohlorid einwirken lässt. PATENT CLAIM: Process for the preparation of a thiazolium compound, characterized in that 2-methyl-4-amino-5-chloromethylpyrimidir-hydrochloride is allowed to act on 4-methyl-b-oxyethylthiazole. Das so erhältliche Hydrochlorid des N (2'- DTethyl-4'-aminopyrimidyl- (5') -methyl)-4- methyl - 5 -oxyäthylthiazoliumchlorids bildet Kristalle vom Schmelzpunkt 250 . Es ist leicht löslich in Wasser. The hydrochloride of N (2'-DTethyl-4'-aminopyrimidyl- (5 ') -methyl) -4-methyl-5 -oxyethylthiazolium chloride obtainable in this way forms crystals with a melting point of 250. It is easily soluble in water.
CH206118D 1936-01-28 1937-01-08 Process for the preparation of a thiazolium compound. CH206118A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE206118X 1936-01-28
CH202663T 1937-01-08

Publications (1)

Publication Number Publication Date
CH206118A true CH206118A (en) 1939-07-15

Family

ID=25723816

Family Applications (1)

Application Number Title Priority Date Filing Date
CH206118D CH206118A (en) 1936-01-28 1937-01-08 Process for the preparation of a thiazolium compound.

Country Status (1)

Country Link
CH (1) CH206118A (en)

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