Morpholine → 4-(6-Nitropyridin-3-yl)morpholine

関与物質

反応条件

反応手順

5-Bromo-2-nitropyridine (5.14 g, 25.3 mmol), tetra-n-butyl ammonium iodide (0.467 g, 1.27 mmol), morpholine (2.43 g, 27.9 mmol) and potassium carbonate (3.85 g, 27.9 mmol) were mixed in DMSO (50 mL). The reaction mixture was warmed to 80° C. for 15 hours. The reaction mixture was diluted with ethyl acetate and the solids removed by filtration. The organic filtrate was washed with water, then the solvent evaporated. The residue was then triturated with a dichloromethane/hexanes mixture to provide 4-(6-nitro-pyridin-3-yl)-morpholine as brown needles (2.90 g, 54.8%). 1H NMR δ (400 MHz, CDCl3) 8.16 (m, 1H), 7.97 (d, J=2.9 Hz, 1H), 7.15 (dd, J=3.2, 9.3 Hz, 1H), 3.45 (m, 4H), 1.72 (m, 4H).

情報源と証拠