caa a22 4500 467991995 CHVBK 20180323112547.0 cr unu---uuuuu 170328e19900301xx s 000 0 eng 10.1007/BF00472552 doi (NATIONALLICENCE)springer-10.1007/BF00472552 Stereochemistry of the reaction of pyridinium ylides with α , Β -unsaturated nitriles [Elektronische Daten] [A. Shestopalov, Yu. Sharanin, V. Litvinov] Regioselective and stereoselective methods were developed for the synthesis of 4-aryl-2-oxo-3-(1-pyridinio)-5-cyano-3,4-trans-1,2,3,4-tetrahydropyridin-6-olates from pyridinium ylides and α,Β-unsaturated nitriles. The compounds were also obtained by the condensation of aromatic aldehydes, cyanoacetamide, and pyridinium ylides. It was established that these reactions take place through the corresponding Michael adducts, which undergo heterocyclization in the form of the anti conformers to substituted 3,4-trans-1,2,3,4-tetrahydropyridin-6-olates. Plenum Publishing Corporation, 1990 Shestopalov A. T. G. Shevchenko State Pedagogical Institute, 348011, Lugansk aut Sharanin Yu T. G. Shevchenko State Pedagogical Institute, 348011, Lugansk aut Litvinov V. T. G. Shevchenko State Pedagogical Institute, 348011, Lugansk aut Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/3(1990-03-01), 311-317 0009-3122 26:3<311 1990 26 10593 https://doi.org/10.1007/BF00472552 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00472552 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shestopalov A. T. G. Shevchenko State Pedagogical Institute, 348011, Lugansk aut NATIONALLICENCE 700 1- Sharanin Yu T. G. Shevchenko State Pedagogical Institute, 348011, Lugansk aut NATIONALLICENCE 700 1- Litvinov V. T. G. Shevchenko State Pedagogical Institute, 348011, Lugansk aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/3(1990-03-01), 311-317 0009-3122 26:3<311 1990 26 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer