[F:1][CH:2](S(C1C=CC=CC=1)(=O)=O)[C:3]1([NH:7][S:8]([C:10]([CH3:13])([CH3:12])[CH3:11])=[O:9])[CH2:6][CH2:5][CH2:4]1.C([O-])(=O)C.[Na+].[Mg].C(=O)([O-])O.[Na+]>CN(C)C=O.C(O)(=O)C.O>[F:1][CH2:2][C:3]1([NH:7][S:8]([C:10]([CH3:13])([CH3:12])[CH3:11])=[O:9])[CH2:4][CH2:5][CH2:6]1To a stirred solution of N-(1-(fluoro(phenylsulfonyl)methyl)cyclobutyl)-2-methylpropane-2-sulfinamide (1.50 g, 4.32 mmol) in N,N-dimethylformamide (270 mL) was added a buffer solution of sodium acetate (22.6 g, 276 mmol) in acetic acid (34.6 mL) and the reaction mixture was stirred for 15 minutes at room temperature. Magnesium turnings (6.92 g, 289 mmol) were added and the mixture stirred at 65° C. for 24 hours. The mixture was treated with water and saturated aqueous sodium hydrogen carbonate and extracted 3 times with ethyl acetate. The combined organic layer was dried over sodium sulfate and concentrated to give a yellow oil. The residue was purified by flash column chromatography on silica (eluent: heptane:ethyl acetate 1:1 to 0:1) to give N-(1-(fluoromethyl)cyclobutyl)-2-methylpropane-2-sulfinamide (560 mg, 53%) as a pale yellow oil.
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