SULFONATION OF DEACTIVATED BENZENE-DERIVATIVES
- 化学化工－已发表论文 
The reactions of benzenesulfonic acid, diphenyl sulfone, nitrobenzene benzaldehyde, benzoic acid, methyl benzoate and benzophenone with SO3 using dichlorornethane as the solvent at room temperature were studied by analysis of the resulting mixtures of the sulfonated derivatives with H-1 NMR. The initial sulfonation of the benzene derivatives yields the corresponding 3-sulfonic acid. With the exception of nitrobenzene and methyl benzoate, small amounts of 3,5-disulfonic acid, in addition, undergoes sulfonation giving 3,3-di and 3,5,3'-trisulfodiphenyl sulfone.