反应详情

温度

150 °C

Into a 500 ml flask having the egg plant shape equipped with a condenser, 200 ml of polyphosphoric acid was placed and heated at 150° C. Then, 32 g (95 mmole) of 4-t-butyl-2-(4-t-butylbenzoyl)benzoic acid was added in small portions, and the resultant mixture was stirred at the same temperature for 3 hours. After the reaction was completed, the reaction mixture was poured into ice water, and the resultant mixture was treated by liquid-liquid extraction with chloroform. After being dried with magnesium sulfate, the extract was concentrated under a reduced pressure by a rotary evaporator. The obtained crude crystals were recrystallized from hexane, and 21 g of the anthraquinone compound of the object compound was obtained (the yield: 69%; yellow crystals).

1. customInto a 500 ml flask having
2. customthe egg plant shape equipped with a condenser
3. dry with materialAfter being dried with magnesium sulfate
4. concentrationthe extract was concentrated under a reduced pressure by a rotary evaporator
5. customThe obtained crude crystals
6. customwere recrystallized from hexane, and 21 g of the anthraquinone compound of the object compound
7. customwas obtained (the yield: 69%