Reaktion #728116

Reaktionsgleichung

N1,N1-Dimethyl-propane-1,2-diamine

potassium carbonate

1-fluoro-4-nitrobenzene

→

N1,N1-Dimethyl-N2-(4-nitro-phenyl)-propane-1,2-diamine

Ausbeute 81.4%

Lösungsmittel

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturThe reaction mixture was cooled to room temperature
2. 2
   Filtrationfiltered
3. 3
   Sonstigeto remove
4. 4
   workup.ADDITIONdiluted with CH2Cl2 (500 mL)
5. 5
   ExtraktionThe reaction mixture was extracted with H2O (3×500 mL)
6. 6
   Trocknendried over anhydrous MgSO4
7. 7
   Filtrationfiltration and concentration in vacuo the gelatinous red residue
8. 8
   Sonstigewas purified by flash silica gel chromatography (CHCl3 to 1:4 MeOH:CHCl3 gradient eluant)

Vorschrift

A solution of N1,N1-Dimethyl-propane-1,2-diamine (10 mL, 77.4 mmol) in DMF (40 mL) at room temperature was treated with potassium carbonate (15.26 g, 1.5 equiv.) and 1-fluoro-4-nitrobenzene (8.21 mL, 1 equiv.). The reaction mixture was stirred at 110° C. overnight. The reaction mixture was cooled to room temperature, filtered to remove remaining solid potassium carbonate and diluted with CH2Cl2 (500 mL). The reaction mixture was extracted with H2O (3×500 mL) and dried over anhydrous MgSO4. Following filtration and concentration in vacuo the gelatinous red residue was purified by flash silica gel chromatography (CHCl3 to 1:4 MeOH:CHCl3 gradient eluant) to give N1,N1-Dimethyl-N2-(4-nitro-phenyl)-propane-1,2-diamine as a light brown oil (81.4%).

Quelle