反应详情

温度

70 °C

40 ml of methanesulfonic acid was added to 1.99 g of diphosphorus pentoxide under nitrogen atmosphere. Thereafter, a mixture consisting of 3.15 g of 1,3,5-trihydroxybenzene and 3,3-dimethylacrylic acid was added to the reaction solution at 70° C. The reaction solution was stirred at 70° C. for 30 minutes and then cooled to a room temperature. The reaction solution was added to ice water, followed by extraction with ethyl acetate. The extract was washed with water and a saturated sodium chloride aqueous solution. The organic layer was dried over magnesium sulfate and then concentrated under a reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate), so as to obtain 2.81 g of the subject compound.

1. additionwas added to the reaction solution at 70° C
2. temperaturecooled to a room temperature
3. extractionfollowed by extraction with ethyl acetate
4. washThe extract was washed with water
5. dry with materialThe organic layer was dried over magnesium sulfate
6. concentrationconcentrated under a reduced pressure
7. customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate)