Reaktion #516153

Reaktionsgleichung

2-chloro-2-(3-nitrophenyl)acetonitrile

1-hexyl-1H-pyrrole-2,5-dione

potassium carbonate

sodium iodide

→

title compound

Ausbeute 32.0%

3-Hexyl-6-(3-nitrophenyl)-2,4-dioxo-3-azabicyclo[3.1.0]hexane-6-carbonitrile

Ausbeute 32.0%

Lösungsmittel

water

N,N-dimethylformamide

N,N-dimethylformamide

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturto warm to room temperature
2. 2
   workup.STIRRINGAfter stirring at room temperature for 2 h the mixture
3. 3
   Extraktionextracted with ethyl acetate (3×5 ml)
4. 4
   TrocknenThe combined organic phases were dried (MgSO4)
5. 5
   Einengenconcentrated in vacuo
6. 6
   Sonstigeto give a residue which
7. 7
   Sonstigewas purified by column chromatography on silica gel eluting with hexane:ethyl acetate (5:1

Vorschrift

A solution of 2-chloro-2-(3-nitrophenyl)acetonitrile (Preparation 112, 103 mg, 0.524 mmol) and 1-hexyl-1H-pyrrole-2,5-dione (Preparation 56, 79 mg, 0.436 mmol) in N,N-dimethylformamide (2 ml) was added dropwise over 30 min to a stirred slurry of potassium carbonate (120 mg, 0.868 mmol) and sodium iodide (33 mg, 0.22 mmol) in N,N-dimethylformamide (4 ml) and water (0.1 ml) at 0° C. The reaction mixture was stirred for 30 min at 0° C. and then allowed to warm to room temperature. After stirring at room temperature for 2 h the mixture was diluted with water (10 ml) and extracted with ethyl acetate (3×5 ml). The combined organic phases were dried (MgSO4) and concentrated in vacuo to give a residue which was purified by column chromatography on silica gel eluting with hexane:ethyl acetate (5:1 and then 3:1). This gave the title compound as brown needles (47 mg, 32%).

Quelle