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Communication | Special issue | Vol 33, No. 1, 1992, pp.101-104
Published online, 1st January, 1970
DOI: 10.3987/COM-91-S30
Structures of Sterically Encumbered 1,9-Bis(arylthio)dibenzothiophenes and Detection of Their Dithia Dications in Concentrated Sulfuric Acid by 1H-NMR

Takeshi Kimura, Yoji Horie, Satoshi Ogawa, Hisashi Fijihara, Fijiko Iwasaki, and Naomichi Furukawa*

*Department of Chemistry, University of Tsukuba, 1-1-1 Ten-nodai, Tsukuba-shi, Ibaraki, 305-8571, Japan


1,9-Bis(arylthio)dibenzothiophenes (1) and their monooxides (2) were prepared and the structures of the phenyl derivatives (1a) and (2a) were determined by X-ray crystallographic analysis. The dithia dications (3) were generated on dissolution of compounds (1) and (2) in concentrated sulfuric acid-d2 and their structures were characterized by 1H-nmr spectroscopy.