反应详情

温度

0 °C

A suspension of 2.12 g (8.49 mmol) of 2-(4-nitro-phenyl)-ethanesulfonyl chloride (as prepared in Example 26, step (c)) in MeOH (40 mL) was cooled to 0° C. and treated with 21.2 mL (42.4 mmol) of methylamine (2.0 M in MeOH). The mixture was slowly warmed to RT, stirred for 16 h, and warmed to 40° C. for 3 days. Solvents were evaporated in vacuo. Silica gel chromatography of the residue on a 50-g Varian MegaBond Elut SPE column with 50% EtOAc-hexane afforded 402 mg (19%) of the title compound as a white solid: 1H-NMR (CD3CN; 400 MHz): δ 8.19 (d, 2H, J=8.8 Hz), 7.54 (d, 2H, J=8.8 Hz), 5.15-5.05 (br s, 1H), 3.39-3.32 (m, 2H), 3.22-3.15 (m, 2H), 2.70 (d, 3H, J=5.2 Hz).

1. temperatureThe mixture was slowly warmed to RT
2. temperaturewarmed to 40° C. for 3 days
3. customSolvents were evaporated in vacuo