反应详情

A solution of (3R,4S)-benzyl 3-((6-bromo-3-carbamoylpyrrolo[1,2-b]pyridazin-4-yl)amino)-4-methoxypyrrolidine-1-carboxylate (300 mg, 0.61 mmol) in acetonitrile (5 mL), was added iodotrimethylsilane (123 mg, 0.614 mmol) at 0° C., the mixture was then stirred at rt for 2 h. The mixture was diluted with ether (30 mL), stirred for 1 h, filtered and rinsed with ether to give the hydroiodide salt of 6-bromo-4-(((3R,4S)-4-methoxypyrrolidin-3-yl)amino)pyrrolo[1,2-b]pyridazine-3-carboxamide (292 mg, 99% yield) as a brown solid. 1H NMR (400 MHz, METHANOL-d4) δ 8.17 (s, 1H), 7.70 (d, J=1.5 Hz, 1H), 7.07 (s, 1H), 4.97-4.88 (m, 2H), 4.56 (br. s., 1H), 4.16-4.09 (m, 1H), 3.67 (dd, J=11.4, 7.7 Hz, 1H), 3.53-3.50 (m, 3H), 3.50-3.45 (m, 1H), 3.40-3.34 (m, 1H), 3.11 (dd, J=11.6, 8.5 Hz, 1H); MS (ES+) m/z: 353.1, 354.0 (M+H); LC retention time: 2.01 min (analytical HPLC Method B).

1. stirringstirred for 1 h
2. filtrationfiltered
3. washrinsed with ether