反应详情

温度

5 °C

2.10 g (6.0 mmol) triacetoxystilbene were dissolved under reflux in 19.3 ml methanol and 39 ml ammonium acetate solution (25%) was added to the solution. The reaction mixture was stirred for three hours at the same temperature and afterwards the methanol was distilled off. By cooling to 5° C. the product crystallized and could be filtered off. 1.33 g (5.82 mmol, 97%) resveratrol were obtained as a pure compound. The mother liquor was purified by extraction with methyl-butyl-ether and neutralized with ammonia. After concentration under reduced pressure the solution was used again for the described reaction.

1. distillationafterwards the methanol was distilled off
2. customcrystallized
3. filtrationcould be filtered off