The synthesis, characterization, and thermal isomerization of some 1,1,2,2-tetraarylcyclopropanes

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DOIResolve DOI: http://doi.org/10.1139/v82-329
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TypeArticle
Journal titleCanadian Journal of Chemistry
Volume60
Issue18
Pages23132320; # of pages: 8
AbstractThe synthesis and spectral characterization of an extensive series of 1,1,2,2-tetraarylcyclopropanes are reported. The effects of substituents on the 13Cmr and 1Hmr chemical shifts are examined in detail. In a series of symmetrically substituted derivatives, the, 13Cmr chemical shifts correlate with ??R0. This correlation is only observed in cases where the C?�C? bond has no net polarity. Details of the thermal isomerization of those derivatives for which the possibility of cis and trans configurations exists are also reported. Trends in the Arrhenius parameters provide evidence for the biradical character of the transition state. Other data supporting the biradical character of the transition state are discussed.
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LanguageEnglish
AffiliationNational Research Council Canada
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NPARC number12328446
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Record identifiere2f5b29e-eebb-4386-ac47-001f717a558e
Record created2009-09-10
Record modified2016-05-09
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