反应详情

Triethylamine (12 mL) and methanesulfonyl chloride (5.7 mL) were added to tetrahydrofuran (150 mL) solution of 5-chloro-2-hydroxymethylpyridine (12.77 g) under cooling with ice, and stirred for 30 minutes under cooling with ice. After addition of water (150 mL), the reaction liquid was extracted with ethyl acetate (150 mL+150 mL), and the organic layer was washed with saturated brine and dried over anhydrous magnesium sulfate. Concentrating the solvent under reduced pressure, the residue was crystallized from ethyl acetate-diisopropyl ether mixed solvent to provide the title compound (14.65 g, 99%).

1. temperatureunder cooling with ice
2. temperatureunder cooling with ice
3. customthe reaction liquid
4. extractionwas extracted with ethyl acetate (150 mL+150 mL)
5. washthe organic layer was washed with saturated brine
6. dry with materialdried over anhydrous magnesium sulfate
7. concentrationConcentrating the solvent under reduced pressure
8. customthe residue was crystallized from ethyl acetate-diisopropyl ether mixed solvent