CH284260A - Process for the preparation of 4-chloro-2-amino-6-methylpyrimidine-1-methochloride. - Google Patents
Process for the preparation of 4-chloro-2-amino-6-methylpyrimidine-1-methochloride.Info
- Publication number
- CH284260A CH284260A CH284260DA CH284260A CH 284260 A CH284260 A CH 284260A CH 284260D A CH284260D A CH 284260DA CH 284260 A CH284260 A CH 284260A
- Authority
- CH
- Switzerland
- Prior art keywords
- chloro
- amino
- methylpyrimidine
- methochloride
- preparation
- Prior art date
Links
Landscapes
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
Verfahren zur Herstellung von 4-Chlor-2-amino#6.methylpyrimidin-l-methochlorid. Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung von 4-Chlor- 2 - amino - 6 - methylpy rimidin-1-methochlorid, welches dadurch gekennzeichnet ist, dass 4- Chlor-2-amino-6-methylpyrimidin mit Methyl- ehlorid zur Reaktion gebracht wird.
Die Reaktion kann durch Erhitzen der ver einigten Reaktionsteilnehmer in einem ge schlossenen Gefäss, zweckmässigerweise in Ge genwart eines Lösungsmittels, wie z. B. f Äthoxyäthanol, Äthanol, Nitrobenzol, Nitro- äthan oder Äthylessigester, ausgeführt wer den.
Das neue quaternäre Salz eignet sich für die Herstellung von Chemotherapeutika und insbesondere von neuen trypanoziden Mitteln. Das 4-Chlor-2-amino-6-methylpyrimidin-l-me- thochlorid kann, wenn gewünscht, nach ein fachen Verfahren der doppelten Umsetzung in quaternäre Salze mit einem andern Anion übergeführt werden.
Im folgenden Beispiel sollen unter Teile Gewichtsteile verstanden werden.
<I>Beispiel:</I> Man mischt 14,4 Teile 4-Chlor-2-amino-6- methylpyrimidin, 50 Teile Methylalkohol und 7,5 Teile Methylchlorid und erhitzt das Ge misch in einem geschlossenen Gefäss während 10 Stunden bei 130 bis 135 C. Hierauf dampft man das Gemisch zur Trockne ein und extra hiert den festen Rückstand mit 35 Teilen Wasser und filtriert.
Man dampft das Filtrat unter vermindertem Druck zur Trockne ein und lässt den Rückstand aus einem Gemisch von Äthylessigester und Methylalkohol aus kristallisieren, wobei 4-Chlor-2-amino-6-me- thylpyrimidin-l-methoehlorid in Form farb loser Prismen vom Smp. 250 C (Zersetzung) erhalten wird.
Process for the preparation of 4-chloro-2-amino # 6.methylpyrimidine-1-methochloride. The present invention relates to a process for the preparation of 4-chloro-2-amino-6-methylpyimidine-1-methochloride, which is characterized in that 4-chloro-2-amino-6-methylpyrimidine reacts with methyl chloride is brought.
The reaction can be carried out by heating the united reactants in a ge closed vessel, conveniently in the presence of a solvent such as. B. f ethoxyethanol, ethanol, nitrobenzene, nitroethane or ethyl acetate, executed who the.
The new quaternary salt is suitable for the production of chemotherapeutic agents and in particular of new trypanocidal agents. The 4-chloro-2-amino-6-methylpyrimidine-1-methochloride can, if desired, be converted into quaternary salts with a different anion by a simple process of double conversion.
In the following example, parts are to be understood as parts by weight.
<I> Example: </I> 14.4 parts of 4-chloro-2-amino-6-methylpyrimidine, 50 parts of methyl alcohol and 7.5 parts of methyl chloride are mixed, and the mixture is heated in a closed vessel at 130 for 10 hours up to 135 ° C. The mixture is then evaporated to dryness and the solid residue is extracted with 35 parts of water and filtered.
The filtrate is evaporated to dryness under reduced pressure and the residue is allowed to crystallize from a mixture of ethyl acetate and methyl alcohol, 4-chloro-2-amino-6-methylpyrimidine-1-methoehlorid in the form of colorless prisms of mp. 250 C (decomposition) is obtained.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB284260X | 1947-08-22 | ||
CH270254T | 1948-08-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH284260A true CH284260A (en) | 1952-07-15 |
Family
ID=25731152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH284260D CH284260A (en) | 1947-08-22 | 1948-08-21 | Process for the preparation of 4-chloro-2-amino-6-methylpyrimidine-1-methochloride. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH284260A (en) |
-
1948
- 1948-08-21 CH CH284260D patent/CH284260A/en unknown
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