Cesium carbonate → HCID 67974225, Verbindung
Reaktionsgleichung
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([OH:8])=[CH:4][C:3]=1[N+:9]([O-:11])=[O:10].Cl[CH2:13][CH2:14][CH:15]1[CH2:20][CH2:19][NH:18][CH2:17][CH2:16]1.C([O-])([O-])=O.[Cs+].[Cs+]>CN(C)C=O>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH2:13][CH2:14][CH:15]2[CH2:20][CH2:19][NH:18][CH2:17][CH2:16]2)=[CH:4][C:3]=1[N+:9]([O-:11])=[O:10]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 80 °C
Versuchsvorschrift
4-chloro-3-nitrophenol (2.5 g, 14.4 mmol, 1 eq.) was placed in dimethylformamide (48 mL) with 4-(2-chloro-ethyl)piperidine (8 g, 43.2 mmol, 3 eq.), Cs2CO3 (33 g, 100.8 mmol, 7 eq.), KI (5.3 g, 31.7 mmol, 2.2 eq.). The reaction mixture was heated at 80° C. and stirred for 20 hours. The reaction mixture was then concentrated under reduced pressure and the resulting residue was diluted with ethyl acetate. The organic phase was washed with a 1% NaOH aqueous solution, dried over MgSO4, filtered and concentrated under reduced pressure. The resulting residue was purified by column chromatography on silica gel to afford 4-(2-(4-chloro-3-nitrophenoxy)ethyl)piperidine (2.3 g, 56%).
Aufarbeitung
- concentrationThe reaction mixture was then concentrated under reduced pressure
- additionthe resulting residue was diluted with ethyl acetate
- washThe organic phase was washed with a 1% NaOH aqueous solution
- dry with materialdried over MgSO4
- filtrationfiltered
- concentrationconcentrated under reduced pressure
- customThe resulting residue was purified by column chromatography on silica gel
Quellen und Nachweise
- ORD-Eintrag
- ord-25a48f51e0a841d4a6821e56f14506e5
- Quelldatensatz
- uspto-grants-2015_06
- Patentnummer
- US09061999B2
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