caa a22 4500 469072245 CHVBK 20180323132925.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF00672794 doi (NATIONALLICENCE)springer-10.1007/BF00672794 Conformational analysis of spiranes. Part III [Elektronische Daten] Manifestation of chirality in the NMR spectra of spirobisdioxanes at low temperatures [H. Dodziuk, J. Sitkowski, L. Stefaniak, I. Mursakulov, I. Gasanov, V. Kurbanova] Spiro[5.5]undecane,1, and its oxa analogues,2, exemplify ambiguities in the domain of chirality. Low temperature1H and13C NMR measurements of tetraoxaspiroundecanes3-5 provide an unusual opportunity for detection of largely neglected effects of the chirality of the frozen conformations of these molecules. For the trispiro compound,5, two dynamical processes are detected upon temperature lowering: cyclohexane and dioxane ring inversion. At low temperatures, it is possible to detect diastereoisomerism of5 due to the existence of three elements of chirality in the molecule. Plenum Publishing Corporation, 1992 Dodziuk H. Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 00-221, Warsaw, Poland aut Sitkowski J. Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 00-221, Warsaw, Poland aut Stefaniak L. Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 00-221, Warsaw, Poland aut Mursakulov I. Institute of Chloroorganic Synthesis, Academy of Sciences of Azerbaidzan SSR, S. Vurquna 124, 373204, Sumgait, Azerb. SSR, USSR aut Gasanov I. Institute of Chloroorganic Synthesis, Academy of Sciences of Azerbaidzan SSR, S. Vurquna 124, 373204, Sumgait, Azerb. SSR, USSR aut Kurbanova V. Institute of Chloroorganic Synthesis, Academy of Sciences of Azerbaidzan SSR, S. Vurquna 124, 373204, Sumgait, Azerb. SSR, USSR aut Structural Chemistry Kluwer Academic Publishers-Plenum Publishers 3/4(1992-08-01), 269-276 1040-0400 3:4<269 1992 3 11224 https://doi.org/10.1007/BF00672794 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00672794 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dodziuk H. Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 00-221, Warsaw, Poland aut NATIONALLICENCE 700 1- Sitkowski J. Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 00-221, Warsaw, Poland aut NATIONALLICENCE 700 1- Stefaniak L. Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 00-221, Warsaw, Poland aut NATIONALLICENCE 700 1- Mursakulov I. Institute of Chloroorganic Synthesis, Academy of Sciences of Azerbaidzan SSR, S. Vurquna 124, 373204, Sumgait, Azerb. SSR, USSR aut NATIONALLICENCE 700 1- Gasanov I. Institute of Chloroorganic Synthesis, Academy of Sciences of Azerbaidzan SSR, S. Vurquna 124, 373204, Sumgait, Azerb. SSR, USSR aut NATIONALLICENCE 700 1- Kurbanova V. Institute of Chloroorganic Synthesis, Academy of Sciences of Azerbaidzan SSR, S. Vurquna 124, 373204, Sumgait, Azerb. SSR, USSR aut NATIONALLICENCE 773 0- Structural Chemistry Kluwer Academic Publishers-Plenum Publishers 3/4(1992-08-01), 269-276 1040-0400 3:4<269 1992 3 11224 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer