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Citation: Yang Bai, Zhang Tianyuan, Shen Jiacong. Preparation of 4-Chloro-4'-hydroxyldiphenylsulfone from 4,4'-DichlorodiphenyI Sulfone by PartiaI Hydrolysis[J]. Chinese Journal of Applied Chemistry, ;1994, 11(1): 88-91. shu

Preparation of 4-Chloro-4'-hydroxyldiphenylsulfone from 4,4'-DichlorodiphenyI Sulfone by PartiaI Hydrolysis

1.
Department of Chemistry, Jilin University, Changchun 130023

Received Date: 20 March 1993
Available Online: 16 August 1993

In this paper,4,4'-dichlorodiphenylsulfone,4,4'-dihydroxyldiphenylsulfone and 4-chloro-4'-hydroxyldiphenylsulfone were separated completely by HPLC. From the relations between the reacting conditions and yields of 4-chloro-4'-hydroxyldiphenylsulfone by hydrolysis of 4,4'-dichlorodiphenylsulfone,it was found that the larger the amount of NaOH and the higher the temperature, the faster the hvdrolvsis and the lower the yield. The amount of the by product 4,4'-dihydroxyldiphenylsulfone increases with reaction time. After the highest point the yield of 4-chloro-4' hydroxyldiphenylsulfone decreases as increase of by-product. The optimum hydrolysis conditions are:135~140℃, NaOH/4,4'-dichlorodiphenylsulfone=3.25:1(molar ratio), reaction time 2,5~3.0h. The yield was above 90%. The condensation polymerization occurred in the hydrolysis and the purification of product also has been disctissed.
- dichlorodiphenylsulfone,
- chlorohydroxyldiphenylsulfone,
- hvdrolysis,
- HPLC
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