反应详情

The product from Example 9, Stage 1a (4.8 g), was stirred in acetic acid (20 ml) and acetic anhydride (5 ml) was added in one portion. Stirring was continued for 1hour after the initially exothermic reaction had subsided. The product was isolated by filtration and recrystallised from aqueous ethanol.

1. customafter the initially exothermic reaction
2. customThe product was isolated by filtration
3. customrecrystallised from aqueous ethanol