反应详情

To a stirred solution of 69.16A (0.200 g, 0.46 mmol) in DCM (5.00 mL) at 0° C. was added TEA (0.077 mL, 0.55 mmol), followed by methanesulfonyl chloride (0.043 mL, 0.55 mmol). The reaction was then stirred for 22 hours, diluted with water, and extracted three times with EtOAc. After drying over anhydrous magnesium sulfate and filtering, the organic solvent was removed under reduced pressure and the product was purified on silica gel (0-10% EtOAc in hexanes) to yield 69.16B as a colorless oil (0.090 g, 43% yield) and a further product 69.16C as a clear oil (0.050 g, 21% yield).

1. extractionextracted three times with EtOAc
2. dry with materialAfter drying over anhydrous magnesium sulfate
3. filtrationfiltering
4. customthe organic solvent was removed under reduced pressure
5. customthe product was purified on silica gel (0-10% EtOAc in hexanes)