反应详情

Diacerein (150 g, 0.41 mol) was stirred in 10% (w/w) Na2CO3 solution (4 L) resulting in a red mixture. After stirring overnight the mixture was acidified to pH2 with 5M HCl solution to give a yellow precipitate. This was filtered and dried in a vac-oven at 50° C. (168 g,>100%).

1. customresulting in a red mixture
2. customto give a yellow precipitate
3. filtrationThis was filtered
4. customdried in a vac-oven at 50° C. (168 g,>100%)