反应详情

温度

90 °C

A suspension of 1-(3-bromo-2-fluorophenyl)-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one (221 mg, 0.500 mmol), 3,3,4,4-tetrafluoropyrrolidine hydrochloride (108 mg, 0.600 mmol), sodium tert-butoxide (125 mg, 1.300 mmol), Xantphos (23 mg, 0.040 mmol), and tris(dibenzylideneacetone)dipalladium(0) (9 mg, 0.010 mmol) in 1,4-dioxane (2.5 mL) was stirred at 90° C. under Ar atmosphere. The reaction mixture was poured into 5% NaHCO3 aqueous solution (20 mL) and extracted with AcOEt (20 mL×3). The combined organic phase was washed with brine (40 mL), dried with MgSO4, and evaporated. The residue was purified by silica gel column chromatography (AcOEt/hexane=60%-100%) to give the title compound (95.4 mg, 38% yield) as an amorphous solid: 1H NMR (300 MHz, CDCl3): δ ppm 3.84-3.96 (7H, m), 6.11 (1H, t, J=7.5 Hz), 6.60 (1H, td, J=8.3, 1.5 Hz), 6.90-6.98 (1H, m), 7.25 (1H, d, J=1.9 Hz), 7.33-7.41 (5H, m), 7.70 (1H, d, J=2.6 Hz), 7.78 (1H, d, J=1.9 Hz). LC-MS (ESI) m/z 504 [M+H]+.

1. extractionextracted with AcOEt (20 mL×3)
2. washThe combined organic phase was washed with brine (40 mL)
3. dry with materialdried with MgSO4
4. customevaporated
5. customThe residue was purified by silica gel column chromatography (AcOEt/hexane=60%-100%)