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'Aminomethylene malononitrile' in keywords
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1979 (1)
1Author    Martin Mittelbach, Hans JunekRequires cookie*
 Title    Synthesen mit Nitrilen, LVII [1] Zur Reaktivität von Aminomethylen-malonsäuredinitrilen gegenüber Aldehyden und Orthoestern Syntheses with Nitriles, LVII [1] The Reactivity of Aminomethylene-malononitriles with Aldehydes and Orthoesters  
 Abstract    Condensation of aminomethy lene-malononitrile (la) with aromatic aldehydes and dimethylformamide-dimethylacetal, resp., leads to benzylidene-malononitriles (2 a, b) and to dimethylaminomethylene-malononitrile (2e), resp. A mechanism of this cleavage of a C = C double bond is discussed. Several substituted enaminonitriles (le-i) are prepared and the reactivity against aldehydes is studied. Thus, condensation of 3-Amino-2-cyano-crotononitrile (le) with aldehydes leads to 2-amino-4-phenyl-l,3-butadiene-l,l-dicarbo-nitriles (3). 4-Oxo-2-phenyl-l,2,3,4-tetrahydro-5-pyrimidine-carbonitriles (4) are yielded by the reaction of 3-amino-2-cyano-crotonic-carboxamide (lh) and 3-amino-2-cyano-cinnamamide (li), resp., with aldehydes. Condensation of lh and li with ethyl ortho-formate leads to 3,4-dihydro-4-oxo-pyrimidine-carbonitriles (6). 
  Reference    Z. Naturforsch. 34b, 1580—1586 (1979); eingegangen am 13. Juli 1979 
  Published    1979 
  Keywords    Aminomethylene-malononitrile, Aminomethylene-cyanoacetamide, Carbonyl Compounds, Orthoesters, Condensation 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1580.pdf 
 Identifier    ZNB-1979-34b-1580 
 Volume    34