反应详情

Compound 6 (0.95 g, 4.2 mmol) was dissolved at room temperature in 15 mL of a solvent mixture composed of EtOH-acetic acid-water 2:2:1. The strongly colored yellow solution became pale yellow in 5 minutes. The mixture was let stand for an additional 15 minutes before it was evaporated to dryness and further dried in high vacuum overnight to get Compound 7 as a yellow powder.

1. customfor an additional 15 minutes
2. customwas evaporated to dryness
3. customfurther dried in high vacuum overnight