Citation:
QIU Ming-Yan, ZHANG Tian-Yong, YUAN Zhong-Fei. Preparation and Purification Technology of 2-[(4-Hydroxyphenyl) sulfonyl]phenol[J]. Chinese Journal of Applied Chemistry,
;2005, 22(5): 566-568.
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2-[(4-Hydroxyphenyl) sulfonyl]phenol (2,4'-HPSP),a developer for thermo-sensitive record paper,was prepared from phenol and H2SO4 with pseudocumene as solvent.The effects of catalyst type,catalyst amount and reaction time on the yield of 2,4'-HPSP were investigated.Under the optimum conditions,the content of 2,4'-HPSP was 37.52% in the product and the total yield was 95.9%(based on H2SO4).The crude product was purified successively with 2% methanol in o-dichlorobenzene and 30% methanol in water.The purity of the final (2,4'-) HPSP was 95.52%,and the total yield was 26.4%.The solvents used in the purification process could be recycled.
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