反应详情

温度

165 °C

In an Emrys microwave, 4-(1,3-dioxan-2-yl)-3-(propan-2-ylsulfonyl)benzonitrile (1090 mg, 3.7 mmol) and pyridinium 4-toluenesulfonate (696 mg, 2.8 mmol; 0.75 eq.) in acetone/water (1:1, 15 ml) were heated with stirring at 165° C. for 7 min. The reaction mixture was then added to water (150 ml) and extracted with dichloromethane (9×30 ml). The combined organic phases were subsequently washed with saturated sodium chloride solution (30 ml), dried over sodium sulfate, filtered and concentrated under reduced pressure. The crude product was subjected to flash chromatography on silica gel (mobile phase: cyclohexane→cyclohexane/ethyl acetate 3:2). The title compound was isolated as a solid (0.764 g, 87% of theory).

1. extractionextracted with dichloromethane (9×30 ml)
2. washThe combined organic phases were subsequently washed with saturated sodium chloride solution (30 ml)
3. dry with materialdried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure