Reaktionsgleichung
[C:1](Cl)(Cl)=[O:2].[CH3:5][C:6]1[CH:11]=[CH:10][C:9]([NH2:12])=[C:8]([NH2:13])[CH:7]=1.[OH-].[Na+]>O>[CH3:5][C:6]1[CH:11]=[CH:10][C:9]2=[N:12][C:1](=[O:2])[N:13]=[C:8]2[CH:7]=1Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
53 g (0.54 mol) of phosgene are passed into 61 g (0.5 mol) of 4-methyl-1,2-diaminobenzene in 450 ml of water and the pH is simultaneously kept constant at 7.2 with 86 g (1.08 mol) of 50% strength aqueous sodium hydroxide solution. After cooling, 72 g of precipitated 5-methyl-benzimidazol-2-one of melting point 290° C. are obtained, which corresponds to a yield of 97% of theory.
Aufarbeitung
- temperatureAfter cooling
Quellen und Nachweise
- ORD-Eintrag
- ord-ff9a0e377a6e4b9ea13ba3f899a87854
- Quelldatensatz
- uspto-grants-1991_03
- Patentnummer
- US05003079
Verknüpfte Notizen
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