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0 °C

A solution of (2-amino-2-methylpropyl)dimethylsulfonium chloride hydrochloride (0.42 g, 2.0 mmol) in a mixture of methanol (10 mL) and water (10 mL) was cooled in an ice bath for 15 min. t-BuOCl (0.72 mL, 3.0 equiv, 6.1 mmol) was added in one portion via syringe to the colorless solution to give a deep yellow solution. The reaction mixture was stirred for 30 min at 0° C., then room temperature for 30 min. The methanol was removed under reduced pressure and the crude solid was purified via reverse phase chromatography on a Shimadzu Prep-LC utilizing water/methanol and 0.05% acetic acid as modifier. Fractions were collected monitoring UV absorbance at 215 nm. Fractions were pooled frozen and lyophilized to give a white solid, (0.26 g, 53.5%). 1H NMR (D2O, 400 MHz): δ 1.41 (s, 6H), 2.51 (s, 2H), 2.98 (s, 2 H). LRMS (ESI−) for C6H14Cl2NS+ (202.0); Found: 203, 204 (M+, M2H+).

1. additionwas added in one portion via syringe to the colorless solution
2. customto give a deep yellow solution
3. waitroom temperature for 30 min
4. customThe methanol was removed under reduced pressure
5. customthe crude solid was purified via reverse phase chromatography on a Shimadzu Prep-LC
6. customFractions were collected
7. temperatureFractions were pooled frozen
8. customto give a white solid, (0.26 g, 53.5%)