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'Pyrazolones' in keywords Facet   section ZfN Section B  [X]
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1999 (1)
1979 (1)
1Author    AbdelKader Fathy, El-Sayed Amer, Mohamed Afsah, MohamedAbbas Tawfik El-Zimaity, MetwallyRequires cookie*
 Title    Synthesis of Hexahydro-bisfbenzo-dipyrazolones, benzo-diazepinone] and Dithiopyrimidoquinazolinetetrone  
 Abstract    A new series of hexahydro-bis-benzodipyrazolones (2a-e) were obtained by the inter-action of 1 with hydrazines. These pyrazolones underwent coupling reaction with different diazonium salts to give 7a-g. Compound 1 when treated with acid hydrazides gave 3 a, b, and when subjected to Japp-Klingemann reaction in alkaline medium gave 6a-e. The hexahydro-bis-benzodiazepine (8), and dithiopyrimidoquinazolinetetrone (10) were obtained by the interaction of 1 with o-phenylenediamine and thiourea respectively. 
  Reference    (Z. Naturforsch. 34b, 95—98 [1979]; received June 5 1978) 
  Published    1979 
  Keywords    Pyrazolones, Diazonium Salts, Synthesis 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0095.pdf 
 Identifier    ZNB-1979-34b-0095 
 Volume    34 
2Author    Stefan Sawusch, Uwe SchildeRequires cookie*
 Title    Ligandenaustauschreaktionen von NiCl2(PPh3)2 mit 0(S)~N~S-Liganden Ligand Exchange Reactions of NiCl2(PPh3)2 with 0 (S )^ N ^ S Ligands  
 Abstract    Ligand exchange reactions of NiCl2(PPh3)2 with O (S)'"'N ^ S ligands were studied. Oxi­ dation products of O^N^S ligands have been characterized and their structures deter­ mined: 3-methyl-4H-benzo[b] [ 1,4]thiazin-2-yl-phenylmethanone / 2-methyl-benzo[d] [ 1,3]thi-azole (mixed crystal); [2-iminoisopropyl-thiophenolato(2-)](triphenyl-phosphane)-nickel(II); 1 -phenyl-3-methyl-4-(benzoyl-thiobenzoylhydrazono)-pyrazol-5-thione; [ 1 -phenyl-3-methyl-4-(benzoyl-thiobenzoylhydrazono)-pyrazol-5-thionato](triphenyl-phosphane)-nickel(II). 
  Reference    Z. Naturforsch. 54b, 881—886 (1999); eingegangen am 9. März 1999 
  Published    1999 
  Keywords    Nickel Chelates, Ligand Exchange Reactions, Benzothiazine, Benzothiazole, Pyrazolone 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0881.pdf 
 Identifier    ZNB-1999-54b-0881 
 Volume    54