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'Pyrazoles' in keywords Facet   Publication Year 1978  [X]
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1978[X]
1Author    FathyA. Amer, AbdelHamid Harhash, MaryL. AwadRequires cookie*
 Title    Synthesis of 2-Methyl-l-phenylthiocarbamoylglyoxal Arylhydrazones and Diethyl(arylazo)(phenylthiocarbamoyl)malonate and their Reactions with Hydrazines  
 Abstract    Treatment of a-phenylthiocarbamoyl acetyl acetone (1) with aromatic diazonium salts effects acetyl cleavage with the formation of 2-methyl-l-phenylthiocarbamoylglyoxal arylhydrazones (2a-c), which afford the anilinopyrazoles (5a-c) and the phenylimino-2-pyrazolines (6a-c) on treatment with hydrazine or phenyl hydrazine respectively. Treatment of diethyl a-phenylthiocarbamoyl malonate with aryl diazonium salts gave diethyl (arylazo)(phenylthiocarbamoyl) malonate which afford the 7-phenyl-5-(arylazo)-2,3,7-triazabicyclo[3,2,0]hept-l-ene-4,6-dione (9a, b) and its 3-phenyl derivatives (9c, d) with hydrazines and phenyl hydrazine respectively. 
  Reference    Z. Naturforsch. 33b, 660—662 (1978); received January 5 1978 
  Published    1978 
  Keywords    Hydrazines, Pyrazoles, Arylhydrazones 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0660.pdf 
 Identifier    ZNB-1978-33b-0660 
 Volume    33