Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Ivan I. Chervin"'
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
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
Autor:
Grigorii A. Nikiforov, Remir G. Kostyanovsky, Yurii A. Strelenko, Konstantin A. Lyssenko, S. V. Usachev, Ivan I. Chervin
Publikováno v:
Mendeleev Communications. 13:136-139
Novel cyclic hydrazines 4–8 with sterically hindered (4, 6, 7) or arrested (5, 8) nitrogen inversion were synthesised; pyrazolydine 5 was separated into enantiomers by chiral chromatography; the crystal structures of salts 5a and 5b were studied by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::596f0442fa97e189217cccfcedb06c1b
https://doi.org/10.1070/mc2003v013n03abeh001751
https://doi.org/10.1070/mc2003v013n03abeh001751
Autor:
Ivan I. Chervin, S. V. Usachev, Yurii A. Strelenko, Pavel A. Belyakov, Grigorii A. Nikiforov, Remir G. Kostyanovsky
Publikováno v:
Mendeleev Communications. 12:189-192
We found that (PriNH)2 with MeCHO form only pyrazoline 1 because of the competitive crotonization of the latter followed by reaction with hydrazine; pyrazoline 2, pyrazolidinones 6 and 9, pyrazolidinol 8 and pyrazolidine 7, in which the inversion of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68387179dbb09465fd2a0e2b49798062
https://doi.org/10.1070/mc2002v012n05abeh001626
https://doi.org/10.1070/mc2002v012n05abeh001626
Autor:
Alexander M. Kuvshinov, Ivan I. Chervin, Valentina I. Gulevskaya, Vladimir V. Rozhkov, Svyatoslav A. Shevelev
Publikováno v:
Synthesis. 1999:2065-2070
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e61014d036dc44e4bbf8b7827c5ef3fc
https://doi.org/10.1055/s-1999-3643
https://doi.org/10.1055/s-1999-3643
Autor:
Gulnara K. Kadorkina, Ivan I. Chervin, Yu. I. El'natanov, G. A. Nikiforov, Sergey V. Usachev, Vasily R. Kostyanovsky, Paul Rademacher, Remir G. Kostyanovsky
Publikováno v:
Russian Chemical Bulletin. 46:1291-1299
N,N′-Diisopropyl-substituted 1,3,4-oxadiazolidine3c, 1,3,4-thiadiazolidine6, 4,5-benzo-1,2,3,6-tetrahydropyridazine8, and new 3,4-dialkyl-1,3,4-oxadiazolidines9–14 were synthesized and studied. The configurational stability of the N atoms does no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e93a3498f555f5bdc26ad6e67ef0231e
https://doi.org/10.1007/bf02495930
https://doi.org/10.1007/bf02495930
Autor:
Ivan S. Bushmarinov, Konstantin A. Lyssenko, V. R. Kostyanovsky, Remir G. Kostyanovsky, Ivan I. Chervin, G. K. Kadorkina
Publikováno v:
ChemInform. 44
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_________::341c5f5ef58ab6993cb479cd56e8787a
https://doi.org/10.1002/chin.201308124
https://doi.org/10.1002/chin.201308124
Publikováno v:
ChemInform. 23
The oxidation of 1,2-bis(methoxyaminooxy)ethane 1 with PbO2 results in the formation of 2,3-dimetboxy-1,4,2,3-dioxadiazinane 2 as a mixture of trans- and cis-isomers (55:45), the regio- and stereo-specific reaction of which with p-nitrobenzoic acid g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1f2f0f50bade19fa61692eebf470da8
https://doi.org/10.1002/chin.199239138
https://doi.org/10.1002/chin.199239138
Publikováno v:
ChemInform. 25
2-(1,1-Dimethyl-2-methoxycarbonylethyl)perhydro-1,3,6,2-trioxazocine (2) has been prepared for the first time via the acid-catalyzed reaction of methyl ester of 3-(dimethoxyamino)isovaleric acid (1) with diethyleneglycol.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::068ebc7a2733581a86dc0ac2b863655f
https://doi.org/10.1002/chin.199418171
https://doi.org/10.1002/chin.199418171
Autor:
Paul Rademacher, Yurii V. Puzanov, Remir G. Kostyanovsky, Vladimir N. Voznesensky, V. A. Korneev, Ivan I. Chervin
Publikováno v:
ChemInform. 27
1,2-Di- tert -butyldiaziridine 1 has been synthesized for the first time and its 1 H and 13 C NMR spectra studied in comparison with model diaziridines 8 – 10 . Its photoelectron and mass spectra have been measured and its structure optimized by se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c60d6f8c7092df9f131305f2a978b64c
https://doi.org/10.1002/chin.199638129
https://doi.org/10.1002/chin.199638129