Reaktionsgleichung
[Br:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][C:9]=1[OH:10])[C:5]#[N:6].[OH:11]S(O)(=O)=O>>[Br:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][C:9]=1[OH:10])[C:5]([NH2:6])=[O:11]Komponenten
3
Reaktionsbedingungen
- Temperatur
- 80 °C
Versuchsvorschrift
3-Bromo-4-hydroxy-benzonitrile (495 mg, 2.5 mmol) is dissolved in H2SO4 98%, heat the solution at 80° C. for 1 hour. Cool the mixture at room temperature and pour it into ice-water. Extract the aqueous layer with EtOAc. Dry the organic layer over Na2SO4. Eliminate the solvent to obtain the title compound (450 mg, 83%). 1H-NMR (metanol-d4, 200 MHz): 8.04 (d, 1H, J=2.0 Hz), 7.70 (dd, 1H, J=2.0 and 8.4 Hz), 6.93 (d, 1H, J=8.6 Hz)
Aufarbeitung
- temperatureCool the mixture at room temperature
- extractionExtract the aqueous layer with EtOAc
- dry with materialDry the organic layer over Na2SO4
Quellen und Nachweise
- ORD-Eintrag
- ord-72cd4c6ae79144deb8de692b6ff3ff36
- Quelldatensatz
- uspto-grants-2008_06
- Patentnummer
- US07381719B2
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