反应详情

A solution of 6-bromo-4-(((3R,4S)-4-methoxypyrrolidin-3-yl)amino)pyrrolo[1,2-b]pyridazine-3-carboxamide hydroiodide (from Step 2 of Example 202, 210 mg, 0.436 mmol) in dichloromethane (2 mL), was added N,N-diisopropylethylamine (0.23 mL, 1.31 mmol) and methanesulfonyl chloride (0.043 mL, 0.52 mmol) at rt. The mixture was stirred at rt for 2 h. The reaction was then quenched with water, diluted with dichloromethane, washed with aq. sodium bicarbonate and brine. The organic layer was dried and concentrated. The crude was tritrated in ether and filtered to give 6-bromo-4-(((3R,4S)-4-methoxy-1-(methylsulfonyl)pyrrolidin-3-yl)amino)pyrrolo[1,2-b]pyridazine-3-carboxamide (136 mg, 72% yield) as a yellow solid. MS (ES+) m/z: 432.3, 463.1 (M+H); LC retention time: 2.31 min (analytical HPLC Method H).

1. customThe reaction was then quenched with water
2. additiondiluted with dichloromethane
3. washwashed with aq. sodium bicarbonate and brine
4. customThe organic layer was dried
5. concentrationconcentrated
6. filtrationfiltered