Acetic Acid → HCID 12952275, compound

Participants

Reaction Conditions

Reaction Steps

To 8.9 g of 7-bromo-2-hydroxy-1,2,3,4-tetrahydro-9-xanthone obtained in Example 67 were added 6.2 g of anhydrous acetic acid and 40 ml of pyridine. The mixture was stirred for 4 hours at 60° C., and after completion of the reaction, the solvent was removed by distillation. The resulting crystals were recrystallized from ethanol to obtain 9.9 g (yield: 97.9%) of 2-acetoxy-7-bromo-1,2,3,4-tetrahydro-9-xanthone as colorless needle-like crystals having a melting point of 177.5° to 178° C.

Provenance & Evidence