Piperidine → 2-Nitro-5-piperidinoaniline

HRID 349662Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 349662
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-7254f2fd16c843e4aa9bb7947f0f2514
Quelldatensatz
uspto-grants-2007_02
Patentnummer
US07179912B2

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