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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