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1999 (1)
1993 (1)
1Author    G. Om Pper, Roland Knieler, K. Urt PolbornRequires cookie*
 Title    R udolf  
 Abstract    The title compound, an octamer CgSg of carbon sulfide, is obtained by reacting diethyl dihydroxythieno[2,3-b]thiophenedicarboxylate with the Lawesson reagent in the presence of sulfur. The crystal structure shows three-dimensional sulfur-sulfur interactions. C arbon sulfide (1) rapidly polymerizes [1]. Its dimer 2 [2-6] and hexamer 3 [7-9] could be de­ tected by neutralization-reionization mass spectro­ metry. A t room tem perature, only the nonamers 4 [10, 11] and 5 [12] are stable compounds. In the 
  Reference    Z. Naturforsch. 48b, 1621—1624 (1993); received May 4 1993 
  Published    1993 
  Keywords    Thieno[2, 3-b]thiophenes, Carbon Sulfide, Sulfur-Sulfur Interactions 
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 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-1621.pdf 
 Identifier    ZNB-1993-48b-1621 
 Volume    48 
2Author    SanaaM. EldinRequires cookie*
 Title    Cyanothioacetamide and its Derivatives in Heterocyclic Synthesis: A New Route for the Synthesis of Several Pyridine and Thieno[2,3-b]pyridine Derivatives and their Biological Evaluation  
 Abstract    Several new pyridine and thieno[2,3-b]pyridine derivatives were synthesized via the reac­ tions of some pyridinethiones, obtained by the action of acetylacetone on some thiocarbox-amidocinnamonitriles, with halogenated esters and ketones. Structures were established based on elemental and spectral data. All the synthesized compounds were tested for their biological activity. 
  Reference    Z. Naturforsch. 54b, 674 (1999); received N ovem ber 9 1998 
  Published    1999 
  Keywords    Pyridines, Thieno[2, 3-b]pyridines, Cyanothioacetamide, Thiocarboxamido-cinnamonitriles, Michael Condensations 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0674.pdf 
 Identifier    ZNB-1999-54b-0674 
 Volume    54