Zobrazeno 1 - 10
of 18
pro vyhledávání: '"S. I. Luiksaar"'
Autor:
V. A. Barachevskii, Valery A. Vasnev, S. I. Luiksaar, B. A. Izmailov, O. I. Kobeleva, L. I. Komarova, Tatyana M. Valova, E. N. Rodlovskaya, M. M. Krayushkin
Publikováno v:
Polymer Science Series B. 53:352-357
Photochromic coatings immobilized on the surface of polyarylate films are prepared on the basis of fulgimides, oligosiloxanes, and oligosilazanes. The irradiation of coatings with UV light at a wavelength of @380 nm and visible light at a wavelength
Autor:
Vladimir N. Yarovenko, B. V. Nabatov, M. M. Krayushkin, I. A. Platonova, L. K. Karabaeva, S. I. Luiksaar, V. A. Barachevski, Igor V. Zavarzin
Publikováno v:
Chemistry of Heterocyclic Compounds. 47:229-236
The precursors and hybrid compounds, including photochromic fulgimides and fluorescent benzothiazolylthienothiophene units, have been synthesized. Spectroscopic investigations by absorption and fluorescence methods showed that fulgimide hybrids displ
Autor:
Anatolii S. Burlov, V. A. Barachevskii, V. A. Kogan, O. I. Kobeleva, Leonid D. Popov, Igor N. Shcherbakov, M. M. Krayushkin, Tatyana M. Valova, S. I. Luiksaar
Publikováno v:
Russian Journal of General Chemistry. 80:1847-1852
On the basis of N-aminofulgimide two new photochromic compounds of the fulgimide class were synthesized. The performed spectral-kinetic studies have shown that the obtained fulgimide derivatives suffer thermally irreversible transformation similar to
Autor:
M. F. Bobrov, L. S. Kol’tsova, E. A. Karpuzova, M. M. Krayushkin, S. I. Luiksaar, G. V. Popova, A. I. Shienok, N. L. Zaichenko, Valery A. Barachevsky
Publikováno v:
Russian Chemical Bulletin. 59:1353-1359
Comparative spectral kinetic studies of the photochromic properties of a novel N-aminofulgimide and the previously synthesized aminospirooxazine intended for the synthesis of organic-inorganic photochromic systems based on cyclotriphosphazene were pe
Publikováno v:
ARKIVOC, Vol 2001, Iss 9, Pp 49-54 (2002)
Aryldichlorocarbenium tetrachloroaluminates are shown to be preferable reagents for the aroylation of 2-acetylthiophene, while the usual ArCOCl·AlCl3 complexes give better results in aroylation of 3-acetylthiophene. Scope and limitations of both aro
Publikováno v:
Russian Chemical Bulletin. 49:886-893
The reductive condensation of trichloromethylarenes with hydrazines can proceed without intermediate formation of pyridinium salts and without participation of pyridine in the reduction act. Variants of reductive condensation using hydrazines as redu
Publikováno v:
Chemistry of Heterocyclic Compounds. 36:1172-1176
The reaction of N-(4-pyridyl)pyridinium and 4-chloropyridinium salts obtained from 1-trichloromethyl-2,4,6-trimethylbenzene and pyridine with N-nucleophiles such as piperidine and morpholine and with C-nucleophiles such as N,N-dimethylaniline and ind
Autor:
Leonid D. Popov, V. A. Kogan, Igor N. Shcherbakov, A. M. Gorelik, Valery A. Barachevsky, S. I. Luiksaar, O. V. Venediktova, M. M. Krayushkin
Publikováno v:
Russian Chemical Bulletin. 58:2423-2425
A Schiff base was synthesized from 5-methoxysalicylaldehyde and N-aminofulgimide, viz., 1-amino-3-[1-(2,5-dimethylthiophen-3-yl)ethylidene]-4-isopropylidenepyrrolidine-2,5-dione. The compound synthesized undergoes photochromic transformations typical
Publikováno v:
Chemistry of Heterocyclic Compounds. 35:871-874
2,5-Bis(5-aryl-1,3,4-oxadiazol-2-yl)furans are synthesized via the reaction of trichloromethylarenes with furan-2,5-dicarboxylic acid dihydrazide. The structures of the products are confirmed by IR and mass spectra.
Publikováno v:
Russian Chemical Bulletin. 47:2238-2245
The reactions of trichloromethylarenes with excess hydrazine hydrate in ethanol gives symmetrical 2,5-diaryl-1,3,4-oxadiazoles in 68–96% yields. The reaction of 1,4-bis(trichloromethyl)benzene with acylhydrazines in an ethanol-pyridine mixture give