杂多酸催化甲苯磺化合成4,4’-二甲二苯砜的研究

Studies on HPA Catalysis for the Reaction of Toluene Sulfonation to 4,4' -Dimethyl diphenylsulfone

通过实验证实杂多酸对甲苯磺化合成4,4’-二甲二苯砜反应具有较好的催化活性,利用紫外光谱研究了杂多酸与对甲苯磺酸的作用。

It is proved by the experiment that HPA is a good catalyst for the reaction of toluene sulfonation to 4,4'-dimethyldiphenyl sulfone. The effect of HPA on p-methyl sulfonic acid has been studied by means of UV and variable-temperature 1H NMR. The preliminary catalytic mechnism is also proposed.