反应详情

温度

25 °C

To a solution of diethyl 3-methoxy-1H-pyrrole-2,4-dicarboxylate (93 mmol) in DMF (340 ml) was added 60% NaH (140 mmol) in portions at 0° C. and the reaction mixture was stirred at 25° C. for 0.5 h. 2,2-Dioxo-[1,2,3]oxathiazolidine-3-carboxylic acid tert-butyl ester (93 mmol) was added at 0° C. and the mixture was allowed to warm to 25° C. and stirred for 21 h. The reaction was quenched with ethanol at 0° C. The solvent was evaporated under vacuum. Yield: 35 g (98% yield)

1. temperatureto warm to 25° C.
2. stirringstirred for 21 h
3. customThe reaction was quenched with ethanol at 0° C
4. customThe solvent was evaporated under vacuum