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'Intramolecular Cyclization' in keywords Facet   Publication Year 1999  [X]
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1999[X]
1Author    Hans Möhrle, Georg KellerRequires cookie*
 Title    a-Dicarbonylmonoxime als Nucleophile und Nachbargruppen a-Dicarbonylm onoxim es as Nucleophiles and Neighbour Groups  
 Abstract    The Q-dicarbonylmonooximes 1 and 11 do not react as simple "CH-acidic-compounds" in the Mannich condensation. In a concerted reaction with aminals in absolute dioxane they give rise to the products 4a -e and 12a -e with better practicability and much higher yields compared with the conventional method. The Mannich bases with a cyclic amine part show in the dehydrogenation, using mercury-EDTA, a neighbouring group participation of the oxime in type 4 and of the oxime or amide function in 12 yielding cyclized products. For the reaction a plausible mechanism is proposed. 
  Reference    Z. Naturforsch. 54b, 632—642 (1999); eingegangen am 27. Januar 1999 
  Published    1999 
  Keywords    Aminal, C-Aminomethylation, Mercury(II)-EDTA Dehydrogenation, Intramolecular Cyclization 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0632.pdf 
 Identifier    ZNB-1999-54b-0632 
 Volume    54