反应详情

To a suspension of the amine 348 (61 mg, 0.119 mmol) in DCM (5 ml) was added methanesulfonyl chloride (20.53 mg, 1.5 eq, 0.179 mmol) and iPr2NEt (46.3 mg, 3 eq, 0.358 mmol) and the reaction mixture was stirred at RT for 3 hours. The mixture was diluted with EtOAc then washed with saturated NH4Cl solution, saturated NaHCO3 solution and brine. The organic phase was collected, dried over Na2SO4, filtered and concentrated. The residue was purified by column chromatography (eluent 25% MeOH in EtOAc) to afford the desired compound 349 as a pale yellow solid (34 mg, 48%). 1H NMR (d6 DMSO) 8.27 (s, 1H), 8.10 (d, J=5.48 Hz, 1H), 7.53 (s, 1H), 7.25 (m, 1H), 6.95 (t, J=9.0 Hz, 1H), 6.76 (m, 1H), 6.71 (s, 1H), 6.24 (d, J=5.48 Hz, 1H), 6.14 (s, 1H), 4.06 (s, 2H), 3.49 (s, 3H), 2.72 (s, 3H), 2.63 (s, 3H), 2.12 (m, 3H), 0.23 (m, 2H), 0.00 (s, 2H).

1. washthen washed with saturated NH4Cl solution, saturated NaHCO3 solution and brine
2. customThe organic phase was collected
3. dry with materialdried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated
6. customThe residue was purified by column chromatography (eluent 25% MeOH in EtOAc)