N-bromobutanimide → 4-bromo-5-(2,6-difluoro-3-nitrophenyl)-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazole
Reaktionsgleichung
[F:1][C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[CH:6][CH:5]=[C:4]([F:11])[C:3]=1[C:12]1[N:16]([CH:17]2[CH2:22][CH2:21][CH2:20][CH2:19][O:18]2)[N:15]=[CH:14][CH:13]=1.[Br:23]N1C(=O)CCC1=O>ClCCl>[Br:23][C:13]1[CH:14]=[N:15][N:16]([CH:17]2[CH2:22][CH2:21][CH2:20][CH2:19][O:18]2)[C:12]=1[C:3]1[C:4]([F:11])=[CH:5][CH:6]=[C:7]([N+:8]([O-:10])=[O:9])[C:2]=1[F:1]Komponenten
4
Versuchsvorschrift
A solution of 5-(2,6-difluoro-3-nitrophenyl)-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazole (1.23 g, 4 mmol) and N-bromosuccinimide (1.25 g, 7 mmol) in dichloromethane (10 mL) was stirred at room temperature for 18 h. The solution was washed with water, dried over anhydrous sodium sulfate and concentrated. Crude 4-bromo-5-(2,6-difluoro-3-nitrophenyl)-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazole was obtained.
Aufarbeitung
- washThe solution was washed with water
- dry with materialdried over anhydrous sodium sulfate
- concentrationconcentrated
Quellen und Nachweise
- ORD-Eintrag
- ord-4ad50e38119c4cb5b70e9b2fc4eb70d8
- Quelldatensatz
- uspto-grants-2015_02
- Patentnummer
- US08946250B2
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