Magnetite and Cerium Dioxide Nanocomposites as Catalysts for Cyclocondensation Reactions of β-Dicarbonyl Compounds in the Synthesis of Pyrimidines and m-Terphenyls
Petkevich A.V. Siniutsich J.V. Martsinkevich D.S. Zdorovets M.V. Shumskaya A.E. Shahab S.N. Filippovich L.N. Ignatovich Z.V. Rogachev A.A.
November 2023Pleiades Publishing
Russian Journal of General Chemistry
2023#93S42 - S55 pp.
Abstract: The effective methods for obtaining Fe3O4/CeO2, Fe3O4(TEOS)CeO2 nanocomposites with cerium dioxide content from 38 to 82% and from 32 to 70%, respectively were developed, their morphological, structural and magnetic studies were carried out. Cerium dioxide and magnetite composites have a crystalline structure and ferromagnetic properties characteristic for magnetite with non-magnetic impurities. Thereby it can be easily separated from the reaction medium by means of a permanent magnet. The nanocomposites exhibit catalytic activity in cyclocondensation reactions: the interaction of chalcones with acetoacetic ester in an alkaline medium in the presence of the 1.6 wt % resulting nanocomposite leads to the formation of m-terphenyl derivatives in one-stage reaction, and in the condensation reaction with the formation of the 4,6-dimethyl-N-(4-methyl-3-nitrophenyl)pyrimidine-2-amine and 4,6-dimethyl-N-(2-methyl-5-nitrophenyl)pyrimidine-2-amine, the yield of the target product was increased to 52 and 96.8%, respectively. The resulting composites can be used repeatedly, providing sufficiently high yields of the target product.
catalyst , cerium dioxide , chalcone , magnetic nanoparticles , pyrimidine derivative
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Institute of Chemistry of New Materials of the National Academy of Sciences of Belarus, Minsk, 2200141, Belarus
L.N. Gumilyov Eurasian National University, Astana, 10000, Kazakhstan
Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Ural Federal University, Yekaterinburg, 620002, Russian Federation
International Sakharov Environmental Institute, Belarusian State University, Minsk, 220070, Belarus
Institute of Physical Organic Chemistry of the National Academy of Sciences of Belarus, Minsk, 220072, Belarus
Institute of Chemistry of New Materials of the National Academy of Sciences of Belarus
L.N. Gumilyov Eurasian National University
Institute of Nuclear Physics
Ural Federal University
International Sakharov Environmental Institute
Institute of Physical Organic Chemistry of the National Academy of Sciences of Belarus
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