Method for synthesizing anthraquinone
A synthesis method and anthraquinone technology are applied in the field of organic compound preparation, can solve problems such as unreported synthetic application of anthraquinone, and achieve the effects of low cost, simplified post-processing steps, and reduced cost
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Embodiment 1
[0015] Add 5g (35mmol) of dimethylamine sulfate and 1.13g (5mmol) of o-benzoylbenzoic acid into a flask, install a condenser tube, and connect it to the decompression system. Then, under the pressure of 5mmHg, it was heated to 120° C., and after 5 hours of reaction, the heating was stopped and the pressure was returned to atmospheric pressure. 0.84 g of product anthraquinone was collected from the condenser tube, and the yield was 80.8%.
Embodiment 2
[0017] Add 5g (about 29mmol) of diethylamine sulfate and 1.13g (5mmol) of o-benzoylbenzoic acid into a flask, install a condenser tube, and connect it to the decompression system. Then, under the pressure of 10 mmHg, heat to 130° C., and after 5 hours of reaction, stop heating and return the pressure to atmospheric pressure. 0.80 g of product anthraquinone was collected from the condenser tube, and the yield was 76.9%.
Embodiment 3
[0019] Add 5g (25mmol) of triethylamine sulfate and 1.13g (5mmol) of o-benzoylbenzoic acid into a flask, install a condenser tube, and connect it to the decompression system. Then, under the pressure of 25 mmHg, heat to 150° C., after 3 hours of reaction, stop heating and return the pressure to atmospheric pressure. 0.75 g of product anthraquinone was collected from the condenser, and the yield was 72.1%.
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