HCID 66650188, compound → HCID 11528963, compound

Participants

Reaction Conditions

Reaction Steps

1-(2,3-Dimethoxy-phenyl)-3-(4-methoxy-phenyl)-propane-1,3-dione (3.1 g, 9.86 mmol) was dissolved in mixture of HI (10 mL) and AcOH (10 mL) and heated at 110° C. for 4 days. The reaction mixture was cooled to rt, diluted with water and solids were filtered. The solid product was washed with water, dried and purified by column chromatography, using 30% EtOAc in dichloromethane to give 1.3 g (52%) of 8-hydroxy-2-(4-hydroxy-phenyl)-4H-chromen-4-one. MS (ES) m/z: 255.08 (M+1), and 154.15.

Provenance & Evidence