caa a22 4500 467993505 CHVBK 20180323112551.0 cr unu---uuuuu 170328e19900201xx s 000 0 eng 10.1007/BF00499420 doi (NATIONALLICENCE)springer-10.1007/BF00499420 Synthesis and spectral properties of vinylogs of heterylpolyenes based on pyran [Elektronische Daten] [Yu. Nesterenko, Yu. Briks, A. Kachkovskii, A. Tolmachev] Vinylogs of unsymmetrical benzothiazole- and indolenine-substituted polyenes — pyran derivatives — were synthesized. Their absorption spectra reveal that the vinylene shift decreases with an increase in the length of the chromophore. The deviations of unsymmetrical heterylpolyenes prove to be negative and, for the same length of the chromophore, increase in absolute value with an increase in the difference in the electron-donor character of the terminal groups. Plenum Publishing Corporation, 1990 Nesterenko Yu Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut Briks Yu Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut Kachkovskii A. Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut Tolmachev A. Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/2(1990-02-01), 218-221 0009-3122 26:2<218 1990 26 10593 https://doi.org/10.1007/BF00499420 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00499420 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nesterenko Yu Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut NATIONALLICENCE 700 1- Briks Yu Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut NATIONALLICENCE 700 1- Kachkovskii A. Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut NATIONALLICENCE 700 1- Tolmachev A. Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/2(1990-02-01), 218-221 0009-3122 26:2<218 1990 26 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer