1361006-47-4Relevant academic research and scientific papers
Oxidative conversion of tetraaryldihydrodibenzothiepins into elemental sulfur and stable cationic dyes accompanied by dual uvvis and cd spectral changes
Suzuki, Takanori,Kuroda, Takuma,Tamaoki, Hitomi,Higasa, Sho,Katoono, Ryo,Fujiwara, Kenshu,Fukushima, Takanori,Yamada, Hidetoshi
, p. 706 - 708 (2013)
Upon oxidation of the title heterocycles with dimethylamino groups, elemental sulfur is extruded to form dicationic dyes, which regenerate the heterocycles by the reaction with Na2S. The electrolysis of the heterocycles induces a drastic change in UVvis spectrum exhibiting several isosbestic points. The bayregion substituents enhance configurational stability, so the optically pure heterocycle can be obtained in terms of helicity of one-handedness, and its chromism is accompanied by a large chiroptical response as detected by CD spectroscopy.
Oxidative desulfurization of electron-donating 5,5,7,7-tetraaryl-5,7-dihydrodibenzo[c,e] thiepins and the related heterocycles: Generation of dicationic dyes upon two-electron oxidation
Suzuki, Takanori,Kuroda, Takuma,Tamaoki, Hitomi,Higasa, Sho,Nehira, Tatsuo,Katoono, Ryo,Ishigaki, Yusuke,Fujiwara, Kenshu,Fukushima, Takanori,Yamada, Hidetoshi
, p. 816 - 829 (2017/07/28)
Upon oxidation of the title heterocycle (1A) with dimethylamino groups, elemental sulfur is extruded to form dicationic dye (1B2+), from which the starting dibenzothiepin derivative was generated by the reaction with Na2S. The bay-region substituents enhance configurational stability, so that, the optically pure heterocycles [(M)-2A, (M)-3A)] can be obtained in terms of helicity of one-handedness by starting with the corresponding optically pure dicationic dyes [(R)-2B2+, (R)-3B2+)]. Similar oxidative desulfurization occurs in dibenzo-1,5-oxathiocin 4A, a structurally related 8-membered heterocycle.
