反应详情

5.0 g of 7-hydroxy-3,4-dimethylcoumarin were dissolved in 20 ml of H2O/1.1 g of NaOH at room temperature, while stirring, and 3.4 g of ethanesulfonyl chloride were added. The mixture was stirred overnight, and the precipitate was filtered off under suction and recrystallized from ethanol.

1. stirringThe mixture was stirred overnight
2. filtrationthe precipitate was filtered off under suction
3. customrecrystallized from ethanol