37577-87-0Relevant academic research and scientific papers
A Novel Conversion of 3,7-Disubstituted 2H,6H-Tetrahydro-1,5,3,7-diselenadiazocines to 4-Substituted 1,2,4-Diselenazolidines by Treating with Oxidizing Agents
Takikawa, Yuji,Koyama, Yutaka,Yoshida, Takamasa,Shimada, Kazuaki,Kabuto, Chizuko
, p. 277 - 278 (1995)
Oxidation of 3,7-disubstituted 2H,6H-tetrahydro-1,5,3,7-diselenadiazocines afforded 4-substituted 1,2,4-diselenazolidines in modest yields.The intermediates of the reactions were supposed to be diselena dications possessing 1,5,3,7-diselenadiazabicyclo3.
Synthesis and oxidative ring contraction of 1,5,3,7-dichalcogenadiazocanes. Novel formation of 1,2,4-diselenazolidines, 1,2,4-ditellurazolidines, and 1,2,3,4,5,7-pentathiazocanes
Takikawa, Yuji,Koyama, Yutaka,Yoshida, Takamasa,Makino, Kenshiro,Shibuya, Hiroki,Sato, Kazuto,Otsuka, Tatsuya,Shibata, Yuko,Onuma, Yuki,Aoyagi, Shigenobu,Shimada, Kazuaki,Kabuto, Chizuko
, p. 1913 - 1925 (2007/10/03)
1,5,3,7-Dithiadiazocanes, 1,5,3,7-diselenadiazocanes, and 1,5,3,7-ditelluradiazocanes were prepared from a primary amine, formalin, and H2S, NaSeH, or NaTeH, respectively. Oxidation of 1,5,3,7- diselenadiazocanes and 1,5,3,7-ditelluradiazocanes using NBS efficiently afforded 1,2,4-diselenazolidines or 1,2,4-ditellurazolidines, respectively. In contrast, treatment of 1,5,3,7-dithiadiazocanes with bromine-elemental sulfur or disulfur dichloride (S2Cl2) afforded 1,2,3,4,5,7- pentathiazocanes. An unusual oxidative conversion of 1,5,3,7- dichalcogenadiazocanes into these products was assumed to proceed through in situ formation of 1,5,3,7-dichalcogenadiazabicyclo[3.3.0]octane-type dications.
