反应详情

To a solution of 3-amino-6-(3-aminophenyl)-N-methylpyrazine-2-carboxamide (26 mg, 0.11 mmol) in dry dichloromethane (2 mL) at 0° C. were added triethylamine (22 mg, 0.22 mmol) and methanesulfonyl chloride (20 mg, 0.17 mmol). The reaction was slowly warmed to room temperature and stirred overnight. Reaction was treated water (10 mL) and diluted with ethyl acetate (100 mL). The organic layer was washed with saturated aqueous sodium bicarbonate (40 mL) and saturated aqueous sodium chloride (30 mL), dried over magnesium sulfate, filtered, and concentrated to afford 3-amino-N-methyl-6-{3-[(methylsulfonyl)amino]phenyl}pyrazine-2-carboxamide (15 mg, 45% yield) as yellow solid. 1H NMR (400 MHz, CDCl3): 8.62 (s, 1H), 7.94 (br s, 1H), 7.75 (br s, 1H), 7.68 (br d, 1H), 7.45 (t, 1H), 7.30 (br d, 1H), 7.25 (br s, 1H), 3.02 (m, 6H); MS (EI) for C13H15N5O3S: 322 (MH+).

1. customReaction
2. washThe organic layer was washed with saturated aqueous sodium bicarbonate (40 mL) and saturated aqueous sodium chloride (30 mL)
3. dry with materialdried over magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated