Reaktionsgleichung
[NH:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[NH:4][C:3](=[O:11])[C:2]1=O.O=S(Cl)[Cl:15].C1(C)C=CC=CC=1>CN(C=O)C>[Cl:15][C:2]1[C:3](=[O:11])[NH:4][C:5]2[C:10]([N:1]=1)=[CH:9][CH:8]=[CH:7][CH:6]=2Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
The quinoxalin-2-one of the present example is prepared with phenyl-1,2-diamine and oxalic acid via the method described in Example 12 to afford the 1,4-Dihydro quinoxaline-2,3-dione. The 1,4-Dihydro quinoxaline-2,3-dione is then treated with SOCl2 in 2.5% DMF:toluene, heated to 130° C., stirred for 2 h, filtered and concentrated to afford the 3-chloro-1H-quinoxalin-2-one in crude form.
Aufarbeitung
- filtrationfiltered
- concentrationconcentrated
Quellen und Nachweise
- ORD-Eintrag
- ord-031c6e8730de4d5a887aa11efd4b647c
- Quelldatensatz
- uspto-grants-2012_08
- Patentnummer
- US08236807B2
Verknüpfte Notizen
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