Abstract
At 500–600‡, di(2-thienyl)sulfide is converted to thiophene, thiophene thiols, dithienyls, and dithienothiophenes, and isomerized to 2,3-dithienylsulfide. Hydrogen sulfide accelerates these reactions significantly. In the liquid phase the thermal conversion of di(2-thienyl)sulfide takes place only with the participation of elemental sulfur or in the system sulfur-hydrogen sulfide. Thiophene and diethienothiophenes are not formed in this case, while isomerization occurs to a large degree. The observed thermal conversions of di(2-thienyl)-sulfide are based on the addition of thiyl radicals to the double bonds of the thiophene ring and to the sulfide sulfur atom.
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Communication 29 of the series “High-temperature organic synthesis.” For Communication 28 see [1].
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1614–1619, December, 1986.
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Voronkov, M.G., Deryagina, E.N., Papernaya, L.K. et al. Thermal hydrothiolysis of di(2-thienyl)sulfide in the gaseous and liquid phase. Chem Heterocycl Compd 22, 1301–1306 (1986). https://doi.org/10.1007/BF00474348
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DOI: https://doi.org/10.1007/BF00474348