反应详情

To a solution of 1-[(3-methyl-1,2-oxazol-4-yl)carbonyl]-10a-(pyridin-3-yl)-2,3,10,10a-tetrahydro-1H,5H-imidazo[1,2-a]pyrrolo[1,2-d]pyrazin-5-one (15 mg, 0.041 mmol) in CH2Cl2 (0.5 mL) was added methyltrioxorhenium (VII) (1 mg, 0.004 mmol) followed by hydrogen peroxide (30% aqueous solution, 70 μL, 0.62 mmol). The resulting solution was stirred vigorously at room temperature. After 4.5 hours the reaction was complete (monitored by LCMS). Water (2 mL) was then added and the mixture extracted with CH2Cl2 (3×1 mL). The extracts were combined, dried (MgSO4), filtered and concentrated in vacuo to give an oil that was purified by flash chromatography (Biotage SP4, 4 g cartridge, gradient 0 to 10% methanol in CH2Cl2). The compound 1-[(3-methyl-1,2-oxazol-4-yl)carbonyl]-10a-(1-oxidopyridin-3-yl)-2,3,10,10a-tetrahydro-1H,5H-imidazo[1,2-a]pyrrolo[1,2-d]pyrazin-5-one (78) was isolated as a colourless oil (2 mg, yield 12%).

1. extractionthe mixture extracted with CH2Cl2 (3×1 mL)
2. dry with materialdried (MgSO4)
3. filtrationfiltered
4. concentrationconcentrated in vacuo
5. customto give an oil that
6. customwas purified by flash chromatography (Biotage SP4, 4 g cartridge, gradient 0 to 10% methanol in CH2Cl2)