反应详情

According to the procedure described in Example 1, 4-chloropyrrolo[1,2-b]-pyridazine-3-carboxamide (100 mg, 0.511 mmol, from Preparation 3) was reacted crude 3-amino-2,2-dimethylcyclopentanone (195 mg, from Step 2). Purification with reverse phase HPLC (Sunfire S10 30×250 mm column), eluting with 30 to 100% solvent B (10% methanol-90% water-0.1% TFA) in solvent A (90% methanol-10% water-0.1% TFA), gave the title compound (27 mg, 18% yield). 1H NMR (400 MHz, methanol-d4) δ ppm 8.15 (1 H, s), 7.50-7.70 (1 H, m), 6.86-7.37 (1 H, m), 6.47-6.90 (1 H, m), 4.49-4.78 (1 H, m), 2.18-2.70 (3 H, m), 1.75-2.26 (1 H, m), 1.03-1.17 (6 H, m); MS (ES+) m/z: 287.2 (M+H); HPLC retention time: 2.487 min (analytical HPLC Method A).

1. customPurification with reverse phase HPLC (Sunfire S10 30×250 mm column)
2. washeluting with 30 to 100% solvent B (10% methanol-90% water-0.1% TFA) in solvent A (90% methanol-10% water-0.1% TFA)