caa a22 4500 445876859 CHVBK 20180317145530.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10593-011-0807-z doi (NATIONALLICENCE)springer-10.1007/s10593-011-0807-z Cyclization of substituted (2-pyridylthio)phenylacetic acids and chromaticity of mesoionic thiazolo[3,2- a ]pyridinium-3-olates [Elektronische Daten] [K. Fedotov, T. Shumeiko, N. Romanov, A. Tolmachev, A. Ilchenko] The cyclization of substituted (2-pyridylthio)phenylacetic acids has been studied. It was established that reaction occurs at two reaction centers with the formation of substituted 3-imino-2-phenyl-2,3-dihydrothieno[2,3-b]pyridine-2-carboxylic acids and substituted mesoionic thiazolo[3,2-a]pyridinium-3-olates. The direction of cyclization is influenced by the acidity of the medium and the character of the substituents in the pyridine nucleus. The spectral properties of the synthesized mesoionic compounds were investigated experimentally and theoretically (by the Pariser-Parr-Pople method). Springer Science+Business Media, Inc., 2011 3-imino-2-phenyl-2,3-dihydrothieno[2,3- b ]pyridine-2-carboxylic acid nationallicence mesoionic compo- unds nationallicence (2-pyridylthio)phenylacetic acids nationallicence thiazolo[3,2- a ]pyridinium-3-olates nationallicence absorption spectra nationallicence Fedotov K. Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanskaya str., 02094, Kyiv, Ukraine aut Shumeiko T. Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanskaya str., 02094, Kyiv, Ukraine aut Romanov N. Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanskaya str., 02094, Kyiv, Ukraine aut Tolmachev A. Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanskaya str., 02094, Kyiv, Ukraine aut Ilchenko A. Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanskaya str., 02094, Kyiv, Ukraine aut Chemistry of Heterocyclic Compounds Springer US; http://www.springer-ny.com 47/5(2011-08-01), 622-630 0009-3122 47:5<622 2011 47 10593 https://doi.org/10.1007/s10593-011-0807-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10593-011-0807-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fedotov K. Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanskaya str., 02094, Kyiv, Ukraine aut NATIONALLICENCE 700 1- Shumeiko T. Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanskaya str., 02094, Kyiv, Ukraine aut NATIONALLICENCE 700 1- Romanov N. Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanskaya str., 02094, Kyiv, Ukraine aut NATIONALLICENCE 700 1- Tolmachev A. Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanskaya str., 02094, Kyiv, Ukraine aut NATIONALLICENCE 700 1- Ilchenko A. Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanskaya str., 02094, Kyiv, Ukraine aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Springer US; http://www.springer-ny.com 47/5(2011-08-01), 622-630 0009-3122 47:5<622 2011 47 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer