反应详情

(2,2-Dimethyltetrahydro-2H-pyran-4-yl)methanol (2.54 g) was dissolved in dry DCM (40 mL) and triethylamine (4.9 mL) was added with stirring. The solution was cooled (ice bath) under nitrogen and methanesulphonyl chloride (1.77 mL) was added dropwise over 5 mins. The mixture was allowed to warm slowly to room temperature as the ice bath melted and was left for 16 h. The mixture was shaken with saturated sodium bicarbonate solution and the aqueous layer was extracted with DCM (×2). The combined organics were washed with brine, dried using a hydrophobic frit and evaporated to give the title compound (3.93 g).

1. temperatureThe solution was cooled (ice bath) under nitrogen
2. extractionthe aqueous layer was extracted with DCM (×2)
3. washThe combined organics were washed with brine
4. customdried
5. customevaporated