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'Regioselective Cyclization' in keywords
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1997 (1)
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 Title    Regioselektive Cyclisierung von Thiocarbonsäureamiden mit Bisimidoyl- chloriden -Synthese von Thiazolidinen mit einer Ketenacetal-Substruktur  
 Abstract    C yclization of T hiocarboxylic A m ides with Bisimidoyl C hlorides -Synthesis of T hiadiazolidines C ontaining a K etenacetal Substructure R ain er B e c k e rt* 3 und M argit G ru n e rb The reactions between bisimidoyl chlorides of oxalic acid 1 and different thioamides deri­ ved from CH-acidic methylene compounds 2, 7 as well as thiobiuretes 9-11 were investigated. The hitherto unknown cyclic keten-N,S-acetals 3 with an oxalic acid substructure were mainly formed by an ambidoselective cycloacylation reaction. Comparison of 13C NMR data sug­ gests a thiazolidine structure with three exocyclic doubly bound residues. In the case of compound 3 g the exact configuration (Z) was determinated on the basis of a heteronuclear Overhauser experiment. 
  Reference    Z. Naturforsch. 52b, 1245—1250 (1997); eingegangen am 14. Juli 1997 
  Published    1997 
  Keywords    Thioamides, Bisimidoyl Chlorides, Regioselective Cyclization, Thiazolidines, 14-Diazadienes 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-1245.pdf 
 Identifier    ZNB-1997-52b-1245 
 Volume    52