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1983 (1)
1Author    M. Torres, A. Clement, 0. P. StrauszRequires cookie*
 Title    Argon-Matrix Isolation of Bis(carbomethoxy)thiirene: Formation of Acyl and Carbalkoxythioketenes  
 Abstract    Photolysis of argon-matrix isolated 4,5-bis(carbomethoxy)-l,2,3-thiadiazole with A = 254 or 265 nm resulted in the almost quantitative formation of bis(carbomethoxy)-thiirene (3g). Photolysis of 3g could only be carried out by long irradiation times at short wavelength A = 210nm and resulted mainly in extensive fragmentation instead of the formation of bis(carbomethoxy)thioketene, confirming earlier predictions that substituents, especially electron-withdrawing ones, should stabilize the thiirene ring. Methylcarboethoxy and methylacetylthioketene were obtained, however, in the argon-matrix photolysis or flow thermolysis of 4-methyl-5-carboethoxy-or 4-carboethoxy-5-methyl-l,2,3-thiadiazole and 4-acetyl-5-methyl-l,2,3-thiadiazole, respectively. 
  Reference    Z. Naturforsch. 38b, 1208—1212 (1983); received June 6 1983 
  Published    1983 
  Keywords    Thiirene, Thioketene, 1, 2, 3-Thiadiazole, Thio-Wolff Rearrangement 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1208.pdf 
 Identifier    ZNB-1983-38b-1208 
 Volume    38