反应详情

温度

90 °C

To N-(3-ethyl-1-((6-hydroxypyridin-2-yl)methyl)-1H-indazol-4-yl)imidazo[1,2-a]pyridine-3-carboxamide (25 mg, 0.061 mmol; prepared according to Example 17, Step A) in DMA (2 mL) was added a mixture (approximately 9:1) of (3R,4S)-tert-butyl 3-fluoro-4-(methylsulfonyloxy)piperidine-1-carboxylate (prepared as described in WO 2008/124323) and tert-butyl 4-(methylsulfonyloxy)piperidine-1-carboxylate (27 mg). Cs2CO3 (39 mg, 0.12 mmol) was added, the reaction vial was sealed, and the mixture was heated to 90° C. and stirred for 6 hours. DMA was removed under reduce pressure. The residue was diluted with EtOAc (20 mL), washed with saturated NaHCO3 aqueous solution and brine, and concentrated. Silica gel chromatography (DCM/MeOH 10:0.5) gave the desired product (12 mg). (The non-fluorinated product, which was also isolated, was utilized in Example 19, Step A).

1. customthe reaction vial was sealed
2. customDMA was removed
3. additionThe residue was diluted with EtOAc (20 mL)
4. washwashed with saturated NaHCO3 aqueous solution and brine
5. concentrationconcentrated