反应详情

温度

50 °C

3-chloro-2-fluoroaniline (0.239 mL, 2.17 mmol) was added to a stirred suspension of methyl 8-(1-bromoethyl)-2-morpholino-4-oxo-4H-chromene-6-carboxylate (215 mg, 0.54 mmol) dissolved in DCM (3 mL) at room temperature. The resulting suspension was stirred for 16 hrs then the temperature was increased to 50° C. for 16 hrs. The crude product was purified by flash chromatography on silica gel eluting with 5% methanol in DCM. The solvent was evaporated to dryness to afford methyl 8-(1-(3-chloro-2-fluorophenylamino)ethyl)-2-morpholino-4-oxo-4H-chromene-6-carboxylate (206 mg, 82%) as a white solid. Mass Spectrum: M+H+ 461.

1. customThe crude product was purified by flash chromatography on silica gel eluting with 5% methanol in DCM
2. customThe solvent was evaporated to dryness