DE98199C - - Google Patents
Info
- Publication number
- DE98199C DE98199C DENDAT98199D DE98199DA DE98199C DE 98199 C DE98199 C DE 98199C DE NDAT98199 D DENDAT98199 D DE NDAT98199D DE 98199D A DE98199D A DE 98199DA DE 98199 C DE98199 C DE 98199C
- Authority
- DE
- Germany
- Prior art keywords
- trichloropurine
- oxy
- dichlorpurine
- takes place
- aqueous alkali
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/02—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
- C07D473/04—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms
- C07D473/06—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3
- C07D473/12—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3 with methyl radicals in positions 1, 3, and 7, e.g. caffeine
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/02—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
- C07D473/04—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/26—Heterocyclic compounds containing purine ring systems with an oxygen, sulphur, or nitrogen atom directly attached in position 2 or 6, but not in both
- C07D473/28—Oxygen atom
- C07D473/30—Oxygen atom attached in position 6, e.g. hypoxanthine
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/40—Heterocyclic compounds containing purine ring systems with halogen atoms or perhalogeno-alkyl radicals directly attached in position 2 or 6
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
PATENTAMT.
PATENTSCHRIFT
KLASSE 12: Chemische Verfahren und Apparate.
Zusatz zum Patent ,M'97673 vom 27. Juli 1897.
Patentirt im Deutschen Reiche vom 17. Oktober 1897 ab. Längste Dauer: 26. Juli 1912.
In dem Patent Nr. 97673 ist ein Verfahren zur Darstellung von (6)-Oxy-(2, 8)-dichlorpurin
beschrieben, welches darin besteht, dafs man Trichlorpurin mit alkoholischem Alkali in (6)-Aethoxy-(2,
8)-dichlorpurin überführt und dieses zu Oxydichlorpurin verseift.
Es wurde nun gefunden, dafs man vom Trichlorpurin direct zum Oxydichlorpurin gelangen
kann, wenn man statt des alkoholischen wässeriges Alkali anwendet. Das Chloratom (6)
des Trichlorpurins wird hierbei glatt durch die Hydroxylgruppe ersetzt.
Man verfährt z. B. folgendermafsen:
Trichlorpurin wird in so viel Normal-Kalilauge gelöst, dafs die Menge des Alkalis
3 Molecülen entspricht, und die Flüssigkeit 3 Stunden auf ioo° erwärmt, wobei sie
sich schwach rosa färbt. Beim Uebersättigen der Lösung mit Salzsäure fällt dann das (6)-0xy-(2,
8)-dichlorpurin in feinen, röthlich gefärbten Nadeln aus.
Die weitere Reinigung geschieht, wie im Haupt-Patent angegeben.
Claims (1)
- Patent-Anspruch:Die durch das Patent Nr. 97673 geschützte Darstellung von (6)-0xypurin (Hypoxanthin) und dessen Alkylderivaten dahin abgeändert, dafs man die Umwandlung des Trichlorpurins in das (6)-Oxy-(2, 8)-dichlorpurin in einer einzigen Operation vermittelst verdünnten wässerigen Alkalis vollzieht und dieses Purinderivat dann, wie nach dem Haupt-Patent, nach event, vorangegangener Alkylirung reducirt.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE98199T |
Publications (1)
Publication Number | Publication Date |
---|---|
DE98199C true DE98199C (de) |
Family
ID=33035599
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT98199D Active DE98199C (de) | |||
DENDAT97673D Active DE97673C (de) |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT97673D Active DE97673C (de) |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE97673C (de) |
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0
- DE DENDAT98199D patent/DE98199C/de active Active
- DE DENDAT97673D patent/DE97673C/de active Active
Also Published As
Publication number | Publication date |
---|---|
DE97673C (de) |
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