反应详情

To a solution of 5,6-dimethoxysaccharin (0.8 g) in dichloromethane (100 ml) was added triethyloxonium tetrafluoroborate (3.5 ml, 1M soln in CH2Cl2) and the solution stirred at room temperature for 3 hrs. After extraction with aqueous sodium bicarbonate, the organic phase was dried and concentrated. Purification by column chromatography (silica, chloroform) gave the title compound (0.2 g).

1. extractionAfter extraction with aqueous sodium bicarbonate
2. customthe organic phase was dried
3. concentrationconcentrated
4. customPurification by column chromatography (silica, chloroform)