Cesium carbonate → HCID 68635100, compound

Participants

Reaction Steps

To a solution of N-(5-(7-hydroxy-6-methoxyquinolin-4-yloxy)pyridin-2-yl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide (300 mg, 0.640 mmol) in DMA (4 mL) was added 3-(7-hydroxy-5-azaspiro[2.4]heptane-5-yl)propyl methanesulfonate (239 mg, 0.960 mmol) and Cs2CO3 (416 mg, 1.280 mmol). The reaction was then stirred at rt for 48 hrs. The solvent was removed and the residue was partioned between saturated NaHCO3 aqueous solution (5 mL) and CHCl3 (25 mL). The organic layer was separated, dried over anhydrous Na2SO4, filtered and the filtrate was concentrated in vacuo. The residue was purified by a silica gel column chromatography (100:15:1 (v/v/v)EtOAc/CH3OH/Et3N) to afford the desired compound as a pale yellow solid (240 mg, 60%).

Provenance & Evidence