The dibenzenesulfonamide of benzidine is oxidized with lead tetraacetate in acetic acid to diphenoquinonedibenzenesulfon-imide. Action of dry hydrogen chloride on this substance gives a single adduct, the dibenzenesulfonamide of 3-chlorobenzidine. Action of hydrogen chloride on this substance leads to a mixture of two adducts: the dibenzenesulfonamide of 3, 3'-dichlorobenzidine and an isomeric diamide, assigned the 3, 5-dichloro structure. The ...
![Benzenesulfonamide,N,N'-(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis-结构式](https://image.chemsrc.com/caspic/278/6324-67-0.png)
![4,4-Bi[benzenesulfonanilide]结构式](https://image.chemsrc.com/caspic/098/52945-06-9.png)