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'Triazoles' in keywords Facet   section ZfN Section B  [X]
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1997 (1)
1987 (1)
1Author    Z. Einab, A. H. Ozien, *. A., -W Areth, A. O. Sarhan, H. Assan, A. H. El-Sherief, A. Bdalla, M. M. Ahm OudRequires cookie*
 Title    A Convenient One-Pot Synthesis of Pyrazolo[3,4-d]pyrimidines and s-Triazolo[3,4-b][l,3?5]thiadiazines  
 Abstract    The reaction of 5-am ino-3-aryl-l-phenylpyrazoles (la-d) with formaldehyde and secondary amines in boiling ethanol gave the corresponding 4-alkylaminomethyl derivatives (2a-f) and bis-(4-pyrazolyl)methane (4a,b) as byproduct. Such reaction with primary aliphatic and aro­ matic amines at room temperature afforded 1,3,5-trisubstituted (5a-h) and 1,3.5,7-tetrasubsti-tuted tetrahydropyrazolo[3,4-d]pyrimidines (8a-k) respectively in good yield. Similarily, the Mannich reaction of 5-m ercapto-3-phenyl-l,2,4-triazole (9) with secondary amines, in boiling ethanol, and primary aromatic amines, at room temperature, gave 2 -substituted aminomethyl derivatives (lOa-c) and (14a-g) respectively,while with primary aliphatic amines, p-toluidine and p-anisidine,at room temperature,and with other primary aromatic amines, in boiling etha­ nol, afforded the cyclized products l,2,4-triazolo[3,4-b]thiadiazines (13a-e); (15f,g) and (15a-e), respectively. 
  Reference    Z. Naturforsch. 52b, 1401—1412 (1997); received June 19 1997 
  Published    1997 
  Keywords    Pyrazoles, Heterocycles, Triazoles, 'H NM R Spectra 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-1401.pdf 
 Identifier    ZNB-1997-52b-1401 
 Volume    52 
2Author    Josef Geisenberger, Jürgen Erbe, Jürgen Heidrich, Ulrich Nagel, Wolfgang BeckRequires cookie*
 Title    Pseudohalogenometallverbindungen, LXV [1] Synthese von Tetrazolen und Triazolen über die 1,3-dipolare Cycloaddition an die Azid-Liganden von polymeren Cobalt(III)-und PalIadium(II)-Komplexen. Darstellung und Struktur von 5-TrichlormethyItetrazol Pseudohalogeno Metal Compounds, LXV [1] Synthesis of Tetrazoles and Triazoles via 1,3-Dipolar Cycloaddition to the Azido Ligands of Polymerie Cobalt(III) and Palladium(II) Complexes. Synthesis and Structure of 5-Trichloromethyltetrazole  
 Abstract    The cycloaddition of nitriles and of dimethylacetylenedicarboxylate to the azide ligand of polymeric Schiff Base cobalt(III) and phosphine palladium(II) complexes gives the corresponding tetrazolate and triazolate complexes from which the heterocycles could be cleaved by hydrogen chloride. Usually the yields are low; if the heterocycle is soluble in ether or sublimable, yields up to 30% have been obtained. Using this method the hitherto unknown 5-trichlormethyltetrazole could be prepared which was characterized by an X-ray structural analysis. Similarly, the cyclo-addition of azido(tetraphenylporphinato)cobalt(III) with nitriles, cyclohexylisocyanide and Me0 2 CC=CC0 2 Me affords the corresponding complexes with heterocyclic ligands. The prepa-ration of tetraphenylporphyrinato(tricyanmethanido)cobalt(III), (TPP)CoN-CC(CN) 2 , is reported. 
  Reference    (Z. Naturforsch. 42b, 55—64 [1987]; eingegangen am 24. Juli 1986) 
  Published    1987 
  Keywords    Tetrazoles, Triazoles, Polymerie Schiff Base Cobalt(III) Complexes, Phosphine Palladium Complexes with Azide, Tetrazolate and Triazolate Ligands 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0055.pdf 
 Identifier    ZNB-1987-42b-0055 
 Volume    42