P 91 Pre-organization of diarylideneacetonyl crownophanes in single crystals to photochemical transformations / I. G. Ovchinnikova, E. V. Bartashevich, E. G. Matochkina, M. I. Kodess, P. A. Slepukhin, A. V. Druzhinin, O. V. Fedorova, G. L. Rusinov, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2011. - Vol.60, №5. - С. 824-840 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): CRYSTAL -- DIARYLIDENEACETONYL -- PHOTOCHEMICAL TRANSFORMATIONS Аннотация: Specific features of crystal packings and pre-organization of diarylideneacetonyl crownophane molecules to solid-phase photochemical transformations were studied on the basis of X-ray diffraction data using methods of simulation of molecular crystal packings. The tendency of the most part of the synthesized macrocyclic E,E-isomers to the formation of homochiral crystals (P212121) was revealed, while (23E,26E)-11,12,14,15-tetrahydro-8H-dinaphtho-[2,1-k:1′,2′-r][1,4,7,10]tetraoxacyclononadecine-23,26-dien-25(9H)-one is prone to polymorphism. A phenomenon of solid-phase stereospecific photochemical dimerization of molecules according to the syn-head-to-tail type without crystal destruction (single crystal—single crystal transformation) was found for one of the modifications of this crownophane \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2011, 60 (5), 824-840.pdf |
U 62 Unusual heterocyclization of chalcone podands with 3-amino-1,2,4-triazole / I. G. Ovchinnikova, M. S. Valova, E. G. Matochkina, M. I. Kodess, A. A. Tumashov, P. A. Slepukhin, O. V. Fedorova, G. L. Rusinov, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2011. - Vol.60, №5. - С. 965-974 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): TEMPLATE SYNTHESIS -- CHALCONE PODAND -- CROWN ETHERS Аннотация: A new type of intramolecular cyclization of 1,5-bis[2-(E-3-oxo-3-phenylprop-1-enyl)-phenoxy]-3-oxapentane with 3-aminotriazole promoted by potassium ions was discovered. A cascade mechanism for the formation of crownophane with 4,7-dihydro[1,2,4]triazolo[1,5-a]-pyrimidine fragment was suggested. Effects of oligooxyethylene fragment of the chalcone podand and acid-base catalysis on the selectivity of the cyclocondensation processes and degree of oxidation of triazolopyrimidine fragments were studied. The product structures were confirmed by IR, 1H and 13C NMR spectroscopy and X-ray diffraction study \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2011, 60 (5), 965-974.pdf |
S 98 Synthesis of crownophane with the bicyclo[2.2.2]octane core / I. G. Ovchinnikova, E. G. Matochkina, M. I. Kodess, P. A. Slepukhin, O. V. Fedorova, G. L. Rusinov, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2011. - Vol.60, №5. - С. 1022-1024 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): SYNTHESIS -- CROWNOPHANE -- OCTANE CORE \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2011, 60 (5), 1022-1024.pdf |