4，4＇－二羟基二苯砜的改进合成

AN IMPROVEMENT OF SYNTHESIS OF 4,4'-DIHYDROXY DIPHENYL SULFONE

改进了苯酚与硫酸反应合成４，４＇－二烃基二苯砜的工艺。按硫酸与苯酚用量摩尔比为０．６：１加料，在１６０℃左右反应，并用共沸溶剂苯不断地除去反应过程中生成的水，合成了４，４＇－二径基二苯砚，产率由原来的５５．５％提高到８９．５％。

An improvement of the synthesis of 4,4’-dihydroxy diphenyl suuone from C6H5OH andH2SO4 was studied.When the mole ratio H2SO4 and C6H5OH was 0.6:1 and the water of thereaction system was constantly removed by C6H6 under 160℃,4,4'-dihydroxy diphenyl sul-fone was obtained.And its yield was increased to 89.5%from 55.5%。