Synthesis of dibenzo[c,e][1,2]diazocines-a new group of eight-membered cyclic azo compounds

Tomomi Nokubi, Stephanie Kindt, Timothy Clark, Akio Kamimura, Markus R. Heinrich

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Abstract

Despite of a remarkable ring strain hitherto unknown dibenzo[c,e][1,2]diazocines 3 could be prepared from readily available azo compounds 4 under mild Ullmann-type reaction conditions. The obtained stereoisomers of the new heterocycles 3 were structurally assigned by 2D NMR experiments and DFT calculations.
Original languageEnglish
Pages (from-to)316-320
JournalTetrahedron Letters
Volume56
Issue number2
Early online date22 Nov 2014
DOIs
Publication statusPublished - 8 Jan 2015

Keywords

  • Radical reactions
  • Azo compounds
  • Ullmann coupling
  • Diazocines
  • Heterocycles

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