Stereospecificity of shielding constants of carbon-13 nuclei in 13C NMR spectra of oximes of hetarenecarbaldehydes and alkyl heteryl ketones |
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| Authors: | A V Afonin I A Ushakov D E Simonenko E Yu Schmidt N V Zorina A V Ivanov A M Vasil’tsov A I Mikhaleva |
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| Institution: | (1) A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, 664033, Russia |
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| Abstract: | It has been discovered that the chemical shifts of carbon atoms in 13C NMR spectra of oximes having pyrrolyl, furyl, benzofuryl, thienyl, and pyridyl rings as substituents are changed systematically
on going from the E- to the Z-isomer. This makes it possible to use the indicated chemical shifts for establishing the configuration of oximes with heterocyclic
substituents and studying the special features of their electronic structure.
Dedicated to Academician of the Russian Academy of Sciences B. A. Trofimov on his 70th jubilee.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1523–1531, October, 2008. |
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| Keywords: | oximes with heterocyclic substituents 13C NMR spectra stereospecificity of shielding constants |
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