反应详情

温度

180 °C

2-(3-Piperidin-4-ylidenemethyl-phenoxy)-5-trifluoromethyl-pyridine hydrochloride (500 mg, 1.35 mmol, from Example 1, Step 5), ethyl pyridazin-3-ylcarbamate (248 mg, 1.48 mmol, prepared according to the procedure described in Synthesis, 1997, 1189-1194 from 3-aminopyridazine) and triethylamine (0.376 mL, 2.7 mmol) were combined in acetonitrile (4.5 mL) and heated in a microwave at 180° C. for 40 minutes. The reaction mixture was cooled to rt and concentrated to form a residue. The residue was purified by silica gel chromatography (50-100% EtOAc in CH2Cl2) to provide the title compound (340 mg). MS (APCI 10 V) AP+ 456.2, 376.2, 335.2; 1H NMR (400 MHz, CD3OD) δ ppm 2.54 (dt, J=50.71, 5.84 Hz, 4H) 3.64 (dt, J=36.50, 5.84 Hz, 4H) 6.47 (s, 1H) 6.96-7.07 (m, 2H) 7.08-7.20 (m, 2H) 7.40 (td, J=7.72, 0.52 Hz, 1H) 7.59 (dd, J=9.13, 4.62 Hz, 1H) 8.08 (dd, J=8.67, 2.68 Hz, 1H) 8.13 (d, J=8.92 Hz, 1H) 8.43 (dt, J=1.79, 0.81 Hz, 1H) 8.79 (d, J=4.19 Hz, 1H).

1. temperatureThe reaction mixture was cooled to rt
2. concentrationconcentrated
3. customto form a residue
4. customThe residue was purified by silica gel chromatography (50-100% EtOAc in CH2Cl2)