摘要
本文报导了以苯酚和浓硫酸为原料,分别用溶剂共沸蒸馏,高温蒸馏,真空脱水等三种方法合成二羟基二苯砜的情况。比较它们的利弊.讨论了不同脱水方法中,反应条件对产率的影响,粗产品的纯化以及4.4’—异构体分离的有效方法。
This paper describes the synthesis of dihydroxy diphenyl sulfone. Which is obtained by sulfonating and condensing a mixture of phenol andc oncentrated sulfuric acid Water is removed by solvent azeotropic distillation, distillation at higher temperature and vacunm dehydrated. The affecting factors for yield sulfone and an economical, efficient method for separation and purification of 4.4'-DDS have been discussed.
关键词
二羟基二苯砜
异构体
合成
砜基
dihydroxy dipheney sulfone
sulfonyl group
4,4'-isomer
