反应详情

A solution of 22.3 (1.25 g, 2.79 mmol, 1.00 equiv) and dipyridinium dichromate (4 g, 10.64 mmol, 4.00 equiv) in 10 mL of DMF was stirred for 15 h at room temperature. The reaction was then quenched with water and extracted with ethyl acetate (3×50 mL). The combined organic layers were washed with brine, dried over anhydrous sodium sulfate and concentrated under vacuum. The residue was loaded onto a silica gel column with ethyl acetate/petroleum ether (1:2 to 3:5) and purified to afford 2-[(3S)-12-[(4-[[(tert-butoxy)carbonyl](methyl)amino]cyclohexyl)oxy]-7-thia-9,11-diazatricyclo[6.4.0.0[2,6]]dodeca-1(8),2(6),9,11-tetraen-3-yl]acetic acid (22.4, 900 mg, 70%) as a colourless oil.

1. customThe reaction was then quenched with water
2. extractionextracted with ethyl acetate (3×50 mL)
3. washThe combined organic layers were washed with brine
4. dry with materialdried over anhydrous sodium sulfate
5. concentrationconcentrated under vacuum
6. custompurified