Methanesulfonyl chloride → (4S,5R)-tert-butyl 4-(fluoromethyl)-2,2-dimethyl-5-(4-(3-(methylsulfonamido-methyl)isoxazol-5-yl)phenyl)oxazolidine-3-carboxylate

Participants

Reaction Conditions

Reaction Steps

To a methylene chloride (10 ml) solution of (4S,5R)-tert-butyl 5-(4-(3-(aminomethyl)isoxazol-5-yl)phenyl)-4-(fluoromethyl)-2,2-dimethyloxazolidine-3-carboxylate (270 mg, 0.66 mmol) that had been cooled to 0° C. is added mesyl chloride (83 mg, 0.73 mmol) and diisopropylethylamine (94 mg, 0.73 mmol) sequentially. The reaction is stirred at 0° C. for thirty minutes then quenched with water (2 ml). The quenched reaction is stirred for thirty minutes at room temperature. The organic phase is dried over sodium sulfate and concentrated to give the title compound (310 mg): m/z (CI) 484 ([M+H]+.

Provenance & Evidence