Diphenyl sulfoxide is a reagent used as an oxidant and hydroxyl activator in combination with a variety of electrophilic reagents. Efficient glycosidation of a phenyl thiosialoside donor with diphenyl sulfoxide and triflic anhydride in dichloromethane was reported. Direct glycosylations with 1-hydroxy glycosyl donors is made using trifluoromethanesulfonic anhydride and diphenyl sulfoxide. The preparation of triarylsulfonium halides was by the action of aryl Grignard reagents on diphenyl sulfoxide.
David Crich,; Wenju Li. Efficient Glycosidation of a Phenyl Thiosialoside Donor with Diphenyl Sulfoxide and Triflic Anhydride in Dichloromethane . Org. Lett.2006, 8 (5), 959-962.
David Y. Gin. Diphenyl Sulfoxide. e-EROS Encyclopedia of Reagents for Organic Synthesis. 2005,
With trifluoromethanesulfonic anhydride generates a powerful promoter system in chemoselective glycosylations using thioglycosides: Org. Lett., 5, 1519 (2003).