Reaktionsgleichung
[N:1]([O-])=O.[Na+].[NH2:5][C:6]1[N:11]([CH2:12][CH2:13][CH3:14])[C:10](=[O:15])[NH:9][C:8](=[O:16])[CH:7]=1.[CH:17]([OH:19])=O>O.[Pt]>[NH2:5][C:6]1[N:11]([CH2:12][CH2:13][CH3:14])[C:10](=[O:15])[NH:9][C:8](=[O:16])[C:7]=1[NH:1][CH:17]=[O:19]Komponenten
6
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
Sodium nitrite (127 kg) was dissolved in water and added to suspension of 6-amino-1-propyl-2,4-(1H,3H)-pyrimidinedione (300 kg) in formic acid (1 400 kg). Pt/C 5 % was added and the reaction mixture was heated to 40°-80° C. The catalyst was filtered off, formic acid was distilled off and ethanol (870 kg) was added. The product was precipitated by cooling and isolated by centrifugation, washed with ethanol/water and used directly in Example 2.
Aufarbeitung
- temperaturethe reaction mixture was heated to 40°-80° C
- filtrationThe catalyst was filtered off
- distillationformic acid was distilled off
- additionethanol (870 kg) was added
- customThe product was precipitated
- temperatureby cooling
- customisolated by centrifugation
- washwashed with ethanol/water
Quellen und Nachweise
- ORD-Eintrag
- ord-c989df1d00ac4daeaf6f9d8b1d9d8be3
- Quelldatensatz
- uspto-grants-1988_10
- Patentnummer
- US04777255
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