140868-26-4Relevant articles and documents
Effect of Through-Space Interaction on the Photolytic Desulfurization or Deselenization and Intramolecular Cyclization Reactions of 1,9-Disubstituted Dibenzochalcogenophenes
Kimura, Takeshi,Ishikawa, Yasuhiro,Ueki, Kensaku,Horie, Yoji,Farukawa, Naomichi
, p. 7117 - 7124 (2007/10/02)
1,9-Dithia and 1,9-diselena substituents in dibenzochalcogenophenes 1 are in close proximity within the van der Waals S-S and Se-Se contacts and hence have a strong through-space interaction.Photolysis of the compounds 1 with a 400 W high-pressure mercury
Generation of new dithia dications from sterically congested 1,9-dithiodibenzothiophenes and their monooxides in concentrated sulfuric acid
Furukawa,Kimura,Horie,Ogawa,Fujihara
, p. 1489 - 1490 (2007/10/02)
1,9-Dithiodibenzothiophenes 2 were prepared by ring contraction of 4,6-dithiothianthrene-5-oxides with n-butyllithium. Both compounds 2 and their monooxides 3 upon dissolution in conc. H2SO4 afforded the corresponding new dithia dications. Electrochemical oxidation of 2 provides the evidence for the neighboring group interaction between the two 1,9-sulfenyl sulfur atoms.
STRUCTURES OF STERICALLY ENCUMBERED 1,9-BIS(ARYLTHIO)DIBENZOTHIOPHENES AND DETECTION OF THEIR DITHIA DICATIONS IN CONCENTRATED SULFURIC ACID BY 1H-NMR
Kimura, Takeshi,Horie, Yoji,Ogawa, Satoshi,Fujihara, Hisashi,Iwasaki, Fujiko,Furukawa, Naomichi
, p. 101 - 104 (2007/10/02)
1,9-Bis(arylthio)dibenzothiophenes (1) and their minooxides (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.
