Acetonitrile → 4-[2-(3-Nitro-1H-pyrazol-1-yl)ethyl]morpholine
Reaktionsgleichung
[N+:1]([C:4]1[CH:8]=[CH:7][NH:6][N:5]=1)([O-:3])=[O:2].Cl.Cl[CH2:11][CH2:12][N:13]1[CH2:18][CH2:17][O:16][CH2:15][CH2:14]1.C(=O)([O-])[O-].[K+].[K+].C(#N)C>>[N+:1]([C:4]1[CH:8]=[CH:7][N:6]([CH2:11][CH2:12][N:13]2[CH2:18][CH2:17][O:16][CH2:15][CH2:14]2)[N:5]=1)([O-:3])=[O:2]Komponenten
5
Versuchsvorschrift
Into an 8-dram vial, 3-Nitro-1H-pyrazole (0.50 g, 4.4 mmol), 4-(2-chloroethyl)-morpholine hydrochloride (1.23 g, 6.63 mmol), Potassium carbonate (1.83 g, 13.3 mmol), and Acetonitrile (30 mL, 600 mmol) were added. The reaction mixture was heated. The reaction was poured over ice. The reaction was partitioned with water and DCM. The organic was separated, washed with Brine and dried over Na2SO4. The solid was filtered and washed with DCM. The solvent was removed under vacuum. The reaction mixture was purified via ISCO column chromatography with DCM and methanol as eluant (1 to 3% methanol). The collected fractions afforded 4-[2-(3-Nitro-pyrazol-1-yl)-ethyl]-morpholine a yellow solid (0.75 g, 75%).