反应详情

To a mixture of 2.00 g (4.63 mmol) (3R,5R,6S)-3-allyl-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-((S)-1-hydroxybutan-2-yl)piperidin-2-one (Example 126, Step B) in water (0.125 g, 6.94 mmol) and DCM (50 mL) was added Dess-Martin periodinane (2.94 g, 6.94 mmol) at ambient temperature. After being stirred for 1 h (no SM detected by TLC), the reaction was quenched by addition of 10 mL of 0.5 M Na2S2O3, extracted with DCM, and washed with sat. aq. NaHCO3 solution and sat. aq. NaCl solution. The combined organic layers were dried over Na2SO4, filtered and the filtrate was concentrated under reduced pressure. Purification of the residue by chromatography on silica gel (80 g SiO2, 5 to 20% EtOAc/hexanes) provided the title compound as a white foam.

1. customwas quenched by addition of 10 mL of 0.5 M Na2S2O3
2. extractionextracted with DCM
3. washwashed with sat. aq. NaHCO3 solution and sat. aq. NaCl solution
4. dry with materialThe combined organic layers were dried over Na2SO4
5. filtrationfiltered
6. concentrationthe filtrate was concentrated under reduced pressure
7. customPurification of the residue by chromatography on silica gel (80 g SiO2, 5 to 20% EtOAc/hexanes)