反应详情

温度

80 °C

To a hot (80° C.) solution of manganese(II) acetate tetrahydrate (858 mg, 3.50 mmol) in acetic acid (8 mL) were added sequentially potassium permanganate (138 mg, 0.875 mmol), acetic anhydride (1,355 mg, 10.5 mmol), anhydrous sodium acetate (420 mg, 5 mmol) and a solution of 2-benzoyl-1-[3,3-di(ethoxycarbonyl)propyl]pyrrole (500 mg, 1.40 mmol) in acetic acid (2 mL). The resulting mixture was stirred at 80° C. for 6 hours, cooled, poured into water (25 mL), and extracted with toluene (3×25 mL). The combined toluene extracts were washed with water (25 mL) and concentrated under reduced pressure to provide 478 mg (96%) of diethyl 5-benzoyl-2,3-dihydro-1H-pyrrolizine-1,1-dicarboxylate (I).

1. temperaturecooled
2. extractionextracted with toluene (3×25 mL)
3. washThe combined toluene extracts were washed with water (25 mL)
4. concentrationconcentrated under reduced pressure