Water → 7-Hydroxy-2-methyl-3-phenyl-4H-chromen-4-one

Participants

Reaction Steps

1-(2,4-Dihydroxy-phenyl)-2-phenyl-ethanone (0.5 g, 3.2 mmol) was refluxed in anhydrous DMF with acetic anhydride (1.5 ml), and anhydrous potassium carbonate (1.4 g 10.1 mmol) for 3 hrs. The solution was then poured into water and the precipitate filtered to give 7-hydroxy-2-methyl-3-phenyl-chromen-4-one as white solid (0.62 g, 66%); Rf 0.75 cf SM 0.9 ethyl acetate/hexane (75/25).

Provenance & Evidence