Triethylamine → (4S,5S)-2,2-dimethyl-5-((2-(trimethylsilyl)ethoxy)carbonylamino)-tetrahydro-2H-pyran-4-yl methanesulfonate

Participants

Reaction Steps

To a solution of 2-(trimethylsilyl)ethyl (3S,4S)-4-hydroxy-6,6-dimethyl-tetrahydro-2H-pyran-3-ylcarbamate (1.0 g, 3.5 mmol) and triethylamine (1.4 mL, 10 mmol) in dichloromethane (10 mL) at 0° C. was dropwise added mesyl chloride (600 mg, 5.20 mmol). The reaction mixture was stirred at room temperature for 4 hours and then diluted with dichloromethane (100 mL). The organic layer was washed with water (50 mL) and brine (50 mL), dried over sodium sulfate, filtered and concentrated to afford the title compound (1.6 g, crude) as a yellow oil which was directly used in the next step without further purification.

Provenance & Evidence