Cesium carbonate → HCID 86651375, compound

Participants

Reaction Steps

To 8-hydroxy-4-phenyl-7-(tetrahydro-2H-pyran-2-yloxy)-2H-chromen-2-one (40 mg, 0.12 mmol) and 1-bromo-2-fluoroethane (22 mg, 0.17 mmol) in 0.4 mL NMP was added Cs2CO3 (46 mg, 0.14 mmol). The mixture was stirred at rt for 5 h under Ar atmosphere and diluted with ether (40 mL). It was washed with water (3×30 mL) and dried over MgSO4 and concentrated. The crude product was purified with chromatography (hexane/EtOAc) to afford 8-(2-fluoroethoxy)-4-phenyl-7-(tetrahydro-2H-pyran-2-yloxy)-2H-chromen-2-one as a white solid (34 mg, 73%). MS (ESI) m/z 385 (M+H+).

Provenance & Evidence