1,3-dipolar cycloaddition of a nitronyl nitroxide-substituted alkyne to heteroaromatic n-imines

Vasiliy Romanov, Aleksey Vorob'ev, Irina Bagryanskaya, Dmitriy Parkhomenko, Evgeny Tretyakov

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

1,3-Dipolar cycloaddition of the triple bond in an ethynyl-substituted nitronyl nitroxide to heteroaromatic N-imines is described. The reaction opens a pathway to polyfunctional nitronyl nitroxides with pyrazolo[1,5-a]pyridine or related substituents. According to X-ray diffraction analysis, dihedral angles between the plane of the paramagnetic moiety and heteroaromatic cycle do not exceed 24°. Reactions between Cu(hfac)2 (hfac≤hexafluoroacetylacetonate ion) and a pyrazolo[1,5-a]pyridine-substituted radical produced a polymer chain complex with a 'head-to-tail' motif resembling that in breathing crystals.

Original languageEnglish
Pages (from-to)1317-1320
Number of pages4
JournalAustralian Journal of Chemistry
Volume70
Issue number12
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • MAGNETOSTRUCTURAL ANOMALIES
  • MOLECULAR MAGNET
  • CU(HFAC)(2)
  • BIRADICALS
  • CHEMISTRY
  • RADICALS
  • COMPLEX

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