Piperidine → 2-Nitro-5-piperidinoaniline

HRID 884411Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 884411
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][CH2:15][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][CH2:15][CH2:14][CH2:13]2)=[CH:7][C:6]=1[NH2:8])([O-:11])=[O:10]

Komponenten

5

Edukt 3

HCID 8082PiperidineHCID 11430Potassium CarbonateHCID 742185-Chloro-2-nitroaniline

Produkt 1

HCID 70622462-Nitro-5-piperidinoanilineAusbeute 22 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
120 °C

Versuchsvorschrift

A mixture of 5-chloro-2-nitrophenylamine (5 g, 29 mmol), piperidine (2.9 mL, 29 mmol), and K2CO3 (4.0 g, 29 mmol) in DMF (20 mL) was stirred at 120° C. for 4 h. The reaction mixture was cooled to room temperature and poured into ice cold water (100 mL). The crude solid product was collected by filtration, air dried, and purified by flash chromatography (silica gel, 4×15 cm, eluted with CHCl3) to yield the product as orange crystals (1.4 g, 22%). See, Aust. J. Chem., 47:247-262 (1994).

Aufarbeitung

  1. temperatureThe reaction mixture was cooled to room temperature
  2. filtrationThe crude solid product was collected by filtration, air
  3. customdried
  4. custompurified by flash chromatography (silica gel, 4×15 cm, eluted with CHCl3)

Quellen und Nachweise

ORD-Eintrag
ord-0aa8436d97014a5fb97cbd5a648594e7
Quelldatensatz
uspto-grants-2012_08
Patentnummer
US08242115B2

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