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0 °C

[Bis(trifluoroacetoxy)iodo]benzene (184 mg, 0.48 mmol) was added to a 0° C. solution of 4-(2,2-dimethylbutyl)-2-{hydroxy[2-(4-pyridin-2-ylphenyl)-1,3-dithian-2-yl]methyl}-N,N-dimethyl-1H-imidazole-1-sulfonamide (110 mg, 0.20 mmol) in acetonitrile/water (3:1) (4 mL). After stirring at 0° C. until no further reaction (LCMS), the reaction mixture was quenched with saturated aqueous sodium thiosulfate/saturated aqueous sodium bicarbonate (1:1) and extracted with methylene chloride. The combined organic extracts were dried (magnesium sulfate) and concentrated in vacuo to afford 4-(2,2-dimethylbutyl)-2-[1-hydroxy-2-oxo-2-(4-pyridin-2-ylphenyl)ethyl]-N,N-dimethyl-1H-imidazole-1-sulfonamide which was used in the next step without further purification.

1. customthe reaction mixture was quenched with saturated aqueous sodium thiosulfate/saturated aqueous sodium bicarbonate (1:1)
2. extractionextracted with methylene chloride
3. dry with materialThe combined organic extracts were dried (magnesium sulfate)
4. concentrationconcentrated in vacuo