CH261821A - Process for the preparation of a substituted 2,4-diamino-1,3,5-triazine. - Google Patents
Process for the preparation of a substituted 2,4-diamino-1,3,5-triazine.Info
- Publication number
- CH261821A CH261821A CH261821DA CH261821A CH 261821 A CH261821 A CH 261821A CH 261821D A CH261821D A CH 261821DA CH 261821 A CH261821 A CH 261821A
- Authority
- CH
- Switzerland
- Prior art keywords
- triazine
- diamino
- substituted
- preparation
- clear
- Prior art date
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines substituierten 2,4-Diamino-1,3,5-triazins. Gegenstand vorliegenden Patentes bildet ein Verfahren zur Herstellung eines substi tuierten 2,4-Diamino-1,3,5-triazins. Das Ver fahren ist dadurch gekennzeichnet, dass man 1-n-Butyl-biguanid mit einer zur Triazinring- bildung geeigneten, den Rest HC= abgeben den Verbindung, wie z.
B. mit Ameisensäure ester, Formamid, Formamidin, Chloroform, Orthoameisensäureester, zum 2-Amino-4-n-bu- tylamino-1,3,5-triazin umsetzt. Die erhaltene neue Base bildet weisse, glänzende Kristalle, die bei 1220 klar schmelzen, bei 1240 wieder vollständig kristallisieren und bei 1440 erneut scharf und klar schmelzen. Sie soll als Heil mittel oder Zwischenprodukt für die Herstel lung von Heilmitteln verwendet werden.
<I>Beispiel 1:</I> Zu einer Suspension von 25,5 Teilen sau rem 1-n-Btttyl-biguanid-sulfat in 60 Teilen Methanol wird eine Lösung von 4,6 Teilen Natrium in 100 Teilen Methanol unter Rüh ren zufliessen gelassen; dann wird eine halbe Stunde bei 50 bis 600 gerührt, auf ungefähr 300 abkühlen gelassen und 8 Teile Äthylfor- miat zugegeben. Nach Abklingen der leicht exothermen Reaktion erwärmt man noch eine Stunde auf 600 und dampft das Reaktions gemisch ein.
Der Rückstand wird zunächst gründlich mit kaltem Wasser, dann mit n/2- Natronlauge gewaschen und aus Methanol kochend heiss umkristallisiert, wobei man das 2-Amino-4-n-butylamino-1,3,5-triazin mit den oben angegebenen Schmelzpunkten erhält.
<I>Beispiel 2:</I> Zur Herstellung dieser Verbindung kann man auch 20 Teile freies 1-n-Buty 1-biguanid mit 40 Teilen Formamid eine halbe Stunde auf 110 bis 1200 erhitzen, überschüssiges Formamid im Vakuum abdestillieren und den Rückstand aus siedendem Methanol umkri- stallisieren.
Process for the preparation of a substituted 2,4-diamino-1,3,5-triazine. The subject of the present patent forms a process for the preparation of a substituted 2,4-diamino-1,3,5-triazine. The process is characterized in that 1-n-butyl biguanide with a suitable for triazine ring formation, the remainder HC = release the compound such.
B. with formic acid ester, formamide, formamidine, chloroform, orthoformic acid ester, to 2-amino-4-n-butylamino-1,3,5-triazine. The new base obtained forms white, shiny crystals which melt clear at 1220, completely crystallize again at 1240 and melt again sharply and clear at 1440. It is intended to be used as a remedy or an intermediate product for the manufacture of remedies.
<I> Example 1: </I> A solution of 4.6 parts of sodium in 100 parts of methanol is poured into a suspension of 25.5 parts of acidic 1-n-ethyl biguanide sulfate in 60 parts of methanol with stirring calmly; then the mixture is stirred for half an hour at 50 to 600, allowed to cool to about 300 and 8 parts of ethyl formate are added. After the slightly exothermic reaction has subsided, the mixture is heated to 600 for one hour and the reaction mixture is evaporated.
The residue is first washed thoroughly with cold water and then with n / 2 sodium hydroxide solution and recrystallized from boiling hot methanol to give 2-amino-4-n-butylamino-1,3,5-triazine with the melting points given above .
<I> Example 2: </I> To produce this compound, 20 parts of free 1-n-buty 1-biguanide with 40 parts of formamide can be heated to 110 to 1200 for half an hour, excess formamide can be distilled off in vacuo and the residue is removed Recrystallize in boiling methanol.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH254538T | 1946-08-16 | ||
CH261821T | 1946-08-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH261821A true CH261821A (en) | 1949-05-31 |
Family
ID=25729832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH261821D CH261821A (en) | 1946-08-16 | 1946-08-16 | Process for the preparation of a substituted 2,4-diamino-1,3,5-triazine. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH261821A (en) |
-
1946
- 1946-08-16 CH CH261821D patent/CH261821A/en unknown
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