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'Cycloaddition Reactions' in keywords Facet   Publication Year 1988  [X]
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1988[X]
1Author    RichardP. Kreher, Thomas HildebrandRequires cookie*
 Title    Structure and Reactivity of Isoannellated Heterocyclic Systems with 4nji-and (4/7+2);r-Electrons, XIV [1] Tri-and Tetracyclic Hetarenes with Localized or Delocalized Pyrrole Units  
 Abstract    2,7-Di-/er/-butyl-2,7-dihydro-benzo[ 1,2-c:3,4-c']dipyrrole (2b) and 2,5,8-Tri-rm-butyl-5.8-di-hydro-2H-benzo[l,2-c:3,4-c':5,6-c"]tripyrrole (3b) have been prepared by acetolysis of the cor-responding tri-and tetracyclic N-oxides, isolated in crystallinic form and characterized by spec-troscopic data. The scope of the N-oxide route is documented and the existence of benzo-annellated pyrroles is proofed. The stabilizing effect of the tert-butyl group is presumably sup-ported by the vicinal annellated heterocycles. 
  Reference    (Z. Naturforsch. 43b, 125—131 [1988]; eingegangen am 15. September 1987) 
  Published    1988 
  Keywords    Benzo-annellated Di-and Tripyrroles, Synthesis, Isolation, Spectroscopic Properties, Cycloaddition Reactions 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0125.pdf 
 Identifier    ZNB-1988-43b-0125 
 Volume    43