反应详情

温度

50 °C

1-hydroxy-3-(oxiran-2-ylmethoxy)-9H-xanthen-9-one (30 mg, 0.11 mmol) synthesized in Step 2 of Example 2 and 50% trifluoroacetic acid (TFA) (5 mL) were charged to a round-bottom flask, followed by stirring at 50° C. for 4 hours. After the reaction was completed, the solvent was removed, followed by drying under reduced pressure to give the title compound (20 mg, 62.7%) as a light yellow solid.

1. customthe solvent was removed
2. customby drying under reduced pressure