Thioxanthone → HCID 23035009, compound

Participants

Reaction Steps

To 320 ml of dichloromethane were suspended 20.2 g (0.1 mol) of diphenylsulfoxide and 21.2 g (0.1 mol) of thioxanthene-9-one, and 28.2 g (0.1 mol) of trifluoromethanesulfonic anhydride was added dropwise thereto at −70 to −60° C., followed by gradually warming to room temperature and reacting with stirring for 3 hours. After completion of the reaction, the obtained reaction solution was washed with water (320 ml×5 times) and the obtained dichloromethane layer was concentrated to dryness under reduced pressure. The obtained crude product was purified by column chromatography to obtain 18.6 g of objective substance as yellow glassy substance (yield: 34%).

Provenance & Evidence