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Monatshefte für Chemie / Chemical Monthly

, Volume 105, Issue 2, pp 314–321 | Cite as

1,3,6-Triphenyl-6-phenylazo-1,4,5,6-tetrahydropyridazin

Neue Synthesen und Strukturuntersuchungen
  • J. Schantl
Organische Chemie und Biochemie

1.3.6-Triphenyl-6-phenylazo-1.4.5.6-tetrahydropyridazine. New syntheses and structural investigations

Abstract

Base induced 1.4-elimination of pyridine·HI from 1-(2-phenyl-2-phenylhydrazono-ethyl)-pyridinium iodide (6) yields 1.3.6-triphenyl-6-phenylazo-1.4.5.6-tetrahydropyridazine (8) the (4+2)-cyclodimer of the intermediate 1-phenyl-1-phenylazoethylene (7).8 can also be obtained by intramolecular oxidative cyclisation (with KMnO4) of 1.4-diphenylbutane-1.4-dione bisphenylhydrazone (12). Spectroscopic data (ms,1H-nmr, uv and ir/Raman) confirm the structure of8.

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Copyright information

© Springer-Verlag 1974

Authors and Affiliations

  • J. Schantl
    • 1
  1. 1.Institut für Organische und Pharmazeutische Chemie der Universität InnsbruckInnsbruckÖsterreich

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