反应详情

1-Acetyl-4,6-dimethylindoline (5.5 g) was dissolved in acetic acid (150 ml), and bromine (2.2 ml) was added dropwise at room temperature. The mixture was stirred at room temperature for 1 hour, and poured into ice water. The precipitated solid was collected by filtration, and recrystallized from methanol to give 6.5 g of the title compound (1).

1. filtrationThe precipitated solid was collected by filtration
2. customrecrystallized from methanol