反应详情

温度

75 °C

A mixture of methyl 3-azido-2-(4-hydroxyphenyl)-6-(4-methoxyphenyl)isonicotinate (83 mg, 0.221 mmol), cesium carbonate (359 mg, 1.10 mmol), and 2-bromoethyl methyl ether (0.062 mL, 0.662 mmol) in acetonitrile (1 mL) was heated at 75° C. for 5 hr. The reaction was partitioned between EtOAc and water. The organic phase was separated and washed with brine, dried with sodium sulfate and the solvent removed. Radial silica gel chromatography (step gradient elution with hexane containing 0 to 30% EtOAc) afforded 42 mg of methyl 3-azido-2-(4-(2-methoxyethoxy)phenyl)-6-(4-methoxyphenyl)isonicotinate as an oil. MS (ESI) m/z 435.1 (M+H). 1H NMR (CDCl3) δ ppm 8.02 (2H, d, J=8.55 Hz), 7.93 (1H, s), 7.78-7.86 (2H, m), 7.05 (2H, d, J=8.85 Hz), 6.98 (2H, d, J=8.85 Hz), 4.16-4.24 (2H, m), 4.02 (3H, s), 3.85 (3H, s), 3.75-3.81 (2H, m), 3.47 (3H, s).

1. customThe reaction was partitioned between EtOAc and water
2. customThe organic phase was separated
3. washwashed with brine
4. dry with materialdried with sodium sulfate
5. customthe solvent removed
6. washRadial silica gel chromatography (step gradient elution with hexane containing 0 to 30% EtOAc)