Glycosylations diphenyl sulfoxide

A conceptually new direct oxidative glycosylation with glycal donors, employing a reagent combination of triflic anhydride and diphenyl sulfoxide, has recently been reported by Gin [83], This new 3-glycosylation method works very well with hindered hydroxy nucleophiles, including sterically shielded carbohydrate hydroxy systems, and can be run on large scales. 

Representative Procedure for Diphenyl Sulfoxide and Triflic Anhydride Promoted Glycosylation with Cl-Hemiacetal Donors 130... 

Garcia, B A, Poole, J L, Gin, D Y, Direct glycosylations with 1-hydroxy glycosyl donors using trifluoromethanesulfonic anhydride and diphenyl sulfoxide, J. Am. Chem. Soc., 119, 7597-7598, 1997. 

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