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Chemcial Industry and Engineering 2019, Vol. 36 Issue (6) :17-22    DOI: 10.13353/j.issn.1004.9533.20191001
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A New Method for the Synthesis of 2, 3, 4-Trihydroxybenzophenone
Liu Lanxiang1, Yi Guandong1, Zhang Wenwen1, Li Kun1, Ji Haobo1, Chen Chiqing2, Liu Yiwen2, Zhang Hong1
1. Research Center of Engineering and Technology of Characteristic Forest Resources, National Forestry and Grassland Administration, Kunming 650224, China;
2. Wufeng Chicheng Biotechnology Co., LTD., Research Center of Engineering and Technology on Efficient Cultivation and Intensive Processing for Gallnut, National Forestry and Grassland Administration, Hubei Wufeng 443400, China

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Abstract The important industrial material 2,3,4-trihydroxydiphenyl (3HBP) was synthesized from pyrogallic acid and benzotrichloride, oxalate and phosphoric acid as the catalyst, methanol-water as mixed solvents in the nitrogen atmosphere. The results of single factor experiments show that the optimum process conditions for synthesis of 3HBP are:Pyrobitumen gallic acid is 6.3 g (0.05 mol), the methanol-water mixed solvents (volume ratio 2:8) is 50.0 mL, benzotrichloride (0.055 mol) is added slowly when the mixture solution is 40℃, and then the temperature of the mixture solution is kept at 65℃ until the pyrogallic acid disappear. The yield of 3HBP was 89.1% tested by column chromatography. The method was simple, environmentally friendly and had value potential of industrial application.
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Articles by authors
Liu Lanxiang
Yi Guandong
Zhang Wenwen
Li Kun
Ji Haobo
Chen Chiqing
Liu Yiwen
Zhang Hong
Keywords2, 3, 4-trihydroxydiphenyl;   synthesis;   optimum process     
Received 2019-01-10;
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Liu Lanxiang, Yi Guandong, Zhang Wenwen, Li Kun, Ji Haobo, Chen Chiqing, Liu Yiwen, Zhang Hong.A New Method for the Synthesis of 2, 3, 4-Trihydroxybenzophenone[J]  Chemcial Industry and Engineering, 2019,V36(6): 17-22
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