Cesium carbonate → N-(3-fluoro-4-(7-(3-(1-hydroxycyclopropyl)propoxy)quinolin-4-yloxy)phenyl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide

Participants

Reaction Steps

To a mixture of 3-(1-hydroxycyclopropyl)propyl methanesulfonate (240 mg, 1.2 mmol) and N-(3-fluoro-4-(7-hydroxyquinolin-4-yloxy)phenyl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide (300 mg, 0.62 mmol) in 5 mL of N,N-dimethylacetamide was added cesium carbonate (470 mg, 2.4 mmol). After stirring at rt for 12 hrs, then the mixture was warmed up to 40° C. and stirred for 6 hrs. The reaction mixture was diluted with 20 mL of water and extracted with ethyl acetate (40 mL×3). The combined organic phases were dried over Na2SO4 and concentrated in vacuo. The residue was purified by a silica gel column chromatography (5:1 (v/v) EtOAc/n-hexane) to afford the desired compound as a white solid (68 mg, 19%).

Provenance & Evidence