反应详情

To a solution of hexahydro-1,1-diphenyl-3H-oxazolo[3,4-a]pyrazin-3-one (50 mg, 0.17 mmol) in chloroform (2 mL) were sequentially added pyridine (0.5 mL) and benzenesulfonyl chloride (43 mg, 0.24 mmol), and the mixture was stirred at room temperature for 2 hours. The reaction solution was concentrated under reduced pressure. The residue was purified with silica gel column chromatography (hexane:ethyl acetate=1:1) and crystallized from diisopropyl ether to obtain the title compound (27 mg, yield 37%).

1. concentrationThe reaction solution was concentrated under reduced pressure
2. customThe residue was purified with silica gel column chromatography (hexane:ethyl acetate=1:1)
3. customcrystallized from diisopropyl ether