Piperazine → 2-Nitro-5-(1-piperazinyl)aniline
Reaktionsgleichung
Cl[C:2]1[CH:3]=[CH:4][C:5]([N+:9]([O-:11])=[O:10])=[C:6]([NH2:8])[CH:7]=1.[NH:12]1[CH2:17][CH2:16][NH:15][CH2:14][CH2:13]1.C([O-])([O-])=O.[K+].[K+]>CN(C=O)C>[N+:9]([C:5]1[CH:4]=[CH:3][C:2]([N:12]2[CH2:17][CH2:16][NH:15][CH2:14][CH2:13]2)=[CH:7][C:6]=1[NH2:8])([O-:11])=[O:10]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 150 °C
Versuchsvorschrift
A mixture of 5-chloro-2-nitrophenylamine (4.3 g, 25 mmol), piperazine (12.5 g, 145 mmol), and K2CO3 (4.0 g, 29 mmol) in DMF (50 mL) was stirred at 150° C. for 18 h. The reaction mixture was cooled to room temperature, solids were removed by filtration, and the filtrate was concentrated to a red residue. The residue was dissolved in EtOAc (100 mL), washed with water (50 mL), dried with Na2SO4, and concentrated in vacuo to afford the product as a yellow solid (3.9 g, 70%). See, Pharmazie, 39:747 (1984).
Aufarbeitung
- temperatureThe reaction mixture was cooled to room temperature
- customsolids were removed by filtration
- concentrationthe filtrate was concentrated to a red residue
- dissolutionThe residue was dissolved in EtOAc (100 mL)
- washwashed with water (50 mL)
- dry with materialdried with Na2SO4
- concentrationconcentrated in vacuo
Quellen und Nachweise
- ORD-Eintrag
- ord-285ac8c3a8594d609fbb81d13f73c4ef
- Quelldatensatz
- uspto-grants-2007_02
- Patentnummer
- US07179912B2
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