Zobrazeno 1 - 10
of 201
pro vyhledávání: '"Remir G. Kostyanovsky"'
Autor:
Vasiliy G. Shtamburg, Svetlana V. Kravchenko, V. V. Shtamburg, Andrey A. Anishchenko, Remir G. Kostyanovsky, Eugene A. Klotz, Roman I. Zubatyuk, Aleksander V. Mazepa
Publikováno v:
Chemistry of Heterocyclic Compounds. 51:553-559
Arylglyoxal hydrates interact with N-alkoxyureas and N-hydroxyurea in acetic acid with selective formation of 3-alkoxy-5-arylimidazolidine-2,4-diones and 5-aryl-3-hydroxyimidazolidine-2,4-diones, respectively. The structures of 3-methoxy-5-phenylimid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0431438c8de2e0af9d5461bdd037170
https://doi.org/10.1007/s10593-015-1735-0
https://doi.org/10.1007/s10593-015-1735-0
Autor:
Alexander V. Mazepa, Gulnara K. Kadorkina, Remir G. Kostyanovsky, Victor Vasilievich Shtamburg, Svetlana V. Shishkina, Vasiliy G. Shtamburg
Publikováno v:
Mendeleev Communications. 26:169-171
N-Alkoxy-N-chlorocarbamates react with 4-dimethyl-aminopyridine yielding 1-alkoxyamino-4-dimethylamino-pyridinium chlorides, new type of O–N–N+ geminal systems. The XRD studies of two representative 1-alkoxyamino-pyridinium chlorides revealed the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1c9306be68b7f98caff9d03c86fbd6c
https://doi.org/10.1016/j.mencom.2016.03.030
https://doi.org/10.1016/j.mencom.2016.03.030
Autor:
Remir G. Kostyanovsky, A. V. Mazepa, Vasiliy G. Shtamburg, Roman I. Zubatyuk, V. V. Shtamburg, Oleg V. Shishkin
Publikováno v:
Chemistry of Heterocyclic Compounds. 49:1195-1206
The cyclization of N-chloro-N-(2-phenylethoxy)urea in the presence of silver trifluoroacetate leads to the formation of 3,4-dihydro-1H-2,1-benzoxazine-1-carboxamide, while N-alkoxy-N'-aryl-N-chloro-ureas in the presence of sodium acetate form 1-alkox
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c297a71ef15e6b0ec90c8b0255f28e76
https://doi.org/10.1007/s10593-013-1363-5
https://doi.org/10.1007/s10593-013-1363-5
Publikováno v:
Chemistry of Heterocyclic Compounds. 48:869-874
Diastereoselective transformations of Leakadine were discovered: dimerization during melting or heating in CHCl3 with the formation of one diastereomer. The obtained dimer reacts with methyl isocyanate under mild conditions with the formation of an N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87b8be7bebb703ee4c2cbce26c5dc7d1
https://doi.org/10.1007/s10593-012-1068-1
https://doi.org/10.1007/s10593-012-1068-1
Autor:
Ivan I. Chervin, Remir G. Kostyanovsky, Ivan S. Bushmarinov, Konstantin A. Lyssenko, G. K. Kadorkina, V. R. Kostyanovsky
Publikováno v:
Chemistry of Heterocyclic Compounds. 48:766-772
Chiral dialkyl- and tetraalkylglycolurils have been obtained using chiral (S)-(+)- and (R)-(-)-1-sec-butyl-3-methylurea as starting materials. The diastereomer (S)-(+)-2,6-di-sec-butyl-4,8-dimethyl-2,4,6,8-tetraazabicyclo[3.3.0]-octane-3,7-dione was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60317a107f5ef8f3696e0218bda4e6df
https://doi.org/10.1007/s10593-012-1055-6
https://doi.org/10.1007/s10593-012-1055-6
Autor:
Svetlana V. Kravchenko, Remir G. Kostyanovsky, V. V. Shtamburg, Roman I. Zubatyuk, Aleksander V. Mazepa, Vasiliy G. Shtamburg, Eugene A. Klotz, Andrey A. Anishchenko
Publikováno v:
ChemInform. 46
Arylglyoxal hydrates interact with N-alkoxyureas and N-hydroxyurea in acetic acid with selective formation of 3-alkoxy-5-arylimidazolidine-2,4-diones and 5-aryl-3-hydroxyimidazolidine-2,4-diones, respectively. The structures of 3-methoxy-5-phenylimid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac8e2f1d1e8a06a2aac416bd767578b0
https://doi.org/10.1002/chin.201552117
https://doi.org/10.1002/chin.201552117
Publikováno v:
Russian Chemical Bulletin. 63:772-774
Reaction of 1,10-bis(methoxymethyl)-1,10-diaza-18-crown-6 (1) with trimethylsilyl azide resulted in hitherto unknown 1,10-bis(azidomethyl)-1,10-diaza-18-crown-6 (2) and novel ionic compound 1,10-bis(azide anion)-1,10-dihydro-1,10-diaza-18-crown-6 (3)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5de805041e578fbc6202041d1272382b
https://doi.org/10.1007/s11172-014-0507-9
https://doi.org/10.1007/s11172-014-0507-9
Autor:
Yu. V. Nelyubina, Fedorov Boris S, E. N. Berseneva, Nina P. Konovalova, T. E. Sashenkova, Konstantin A. Lyssenko, V. N. Varfolomeev, Remir G. Kostyanovsky, I. V. Vystorop
Publikováno v:
Russian Chemical Bulletin. 59:127-135
The reactions of glycine hydroxamic and DL-alanine hydroxamic acids with triacetonamine are chemoselective and afford 1-hydroxy-7,7,9,9-tetramethyl-1,4,8-triazaspiro[4.5]decan-2-one (3) and (±)-1-hydroxy-3,7,7,9,9-pentamethyl-1,4,8-triazaspiro[4.5]d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dadfbd1030be135dceebb57179085ff8
https://doi.org/10.1007/s11172-010-0055-x
https://doi.org/10.1007/s11172-010-0055-x
Autor:
Sergey V. Usachev, Remir G. Kostyanovsky, K. A. Lyssenko, Yulia V. Nelubina, Pavel A. Levkin, Grygorii A. Nikiforov
Publikováno v:
Tetrahedron: Asymmetry. 18:1540-1547
Syntheses of trans-1,2-di-tert-butylpyrazolidine 1, d,l- and semi-meso-1,2-diisopropyl-3,5-dimethylpyrazolidines, 2a and 2b, respectively, have been developed. Activation parameters of the nitrogen inversion in 1 (ΔG≠ = 123 kJ mol−1 at 110 °C,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f97fb878981c47e665088aebeb6dbf2
https://doi.org/10.1016/j.tetasy.2007.06.022
https://doi.org/10.1016/j.tetasy.2007.06.022
Publikováno v:
Tetrahedron Letters. 48:3363-3366
It was found by X-ray diffraction and NMR studies that the structure of the adduct of bis- ortho -methyl-bis- para -methyl substituted Troger base and dimethyl acetylenedicarboxylate is a [3.3.1]bicyclic compound corresponding to the methyl 13-[1-(me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dc6f12996dbf865f765cc9f65b285fb
https://doi.org/10.1016/j.tetlet.2007.03.076
https://doi.org/10.1016/j.tetlet.2007.03.076