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Mikhailov I. E. Artyushkina Yu. M. Dushenko G. A. Minkin V. I. 《Russian Journal of General Chemistry》2020,90(11):2059-2063
Russian Journal of General Chemistry - 2-Aryl-5-butyl-1,3,4-oxadiazoles have been obtained in 59–85% yield via refluxing of equimolar amounts of a benzoic acid hydrazide with trimethyl... 相似文献
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G. A. Dushenko I. E. Mikhailov Yu. M. Artyushkina O. I. Mikhailova V. V. Tkachev S. M. Aldoshin V. I. Minkin 《Russian Journal of General Chemistry》2016,86(6):1306-1313
Density functional theory [DFT B3LYP/6-311++G(d,p)] simulation has revealed stable tautomers and conformers of polydentate ligand system based on 5,7-di(tert-butyl)-2-(8-hydroxyquinolin-2-yl)-1,3-tropolone with different structures of the coordination nodes, capable of formation of metal chelates. It has been shown that the tautomeric NH- and OH- forms with exo and endo location of the hydroxy group in the quinoline fragments (close in energy, ΔEZPE = 0.2–2.4 kcal/mol) are stabilized by intramolecular hydrogen bonds. Energy barriers of the interconversion of these forms via rotation about the C–OH bond of the phenolic fragment are of ΔEZPE≠ = 2.1–4.2 kcal/mol, whereas the barrier of rotation about the bond between the quinoline and tropolone fragments is higher (ΔEZPE≠ = 18.2 and 19.6 kcal/mol). 相似文献
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Mikhailov I. E. Artyushkina Yu. M. Dushenko G. A. Minkin V. I. 《Russian Journal of General Chemistry》2019,89(10):2165-2169
Russian Journal of General Chemistry - Cyclization of N′-(arylcarbonyl)benzohydrazides in SOCl2 has afforded 2-aryl-5-(4-octyloxyphenyl)-1H-1,3,4-oxadiazoles; the spectral-luminescent... 相似文献
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Mikhailov I. E. Artyushkina Yu. M. Dushenko G. A. Minkina V. I. 《Russian Chemical Bulletin》2020,69(1):176-178
Russian Chemical Bulletin - 2-Aryl-5-methyl-1,3,4-oxadiazoles were synthesized by reflux of equimolar amounts of acyl hydrazides with triethyl orthoacetate in o-xylene. The obtained oxadiazoles,... 相似文献
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